You know exactly what happens. You buy a bulk lot, sort through it, scan the figs, and then... what? You toss them in a bin. Maybe you snap a photo. Maybe you scribble a few names on a sticky note. Three weeks later you're digging through that same bin trying to remember if you already listed that Clone Commander or not.

Inventory management is the boring part of LEGO reselling that nobody wants to talk about. But it's also the part that separates people who make money from people who just accumulate plastic. Without a system, you lose track of what you have, forget what you paid, double-list items, and have zero clue what your collection is actually worth.

The problem gets worse as your inventory grows. Ten figs? You can keep it in your head. A hundred? Maybe a spreadsheet holds up. A thousand? You need a real system or you're bleeding time and money every single week.

Here are the best ways to manage your LEGO inventory right now, from purpose-built tools to bare-minimum approaches. I've used all of them at different stages, and each one has a clear use case.

What Should a LEGO Inventory System Actually Do?

Before we get into the options, here's what matters for a LEGO inventory tool:

  • Fast entry. If adding an item takes 3 minutes, you won't do it. The system needs to be faster than the sorting process.
  • Accurate pricing. Knowing you have 200 minifigures means nothing if you don't know what they're worth. Your inventory tool should show current market values.
  • Easy lookups. When a buyer asks if you have a specific figure, you need to check in seconds, not dig through a bin.
  • Total portfolio value. You should know what your entire collection is worth at any given time. This matters for insurance, taxes, and deciding when to sell.
  • Low maintenance. If the system requires constant manual updates to stay accurate, it'll fall behind within a month.

With that criteria in mind, let's look at the options.

1. brick'em (Best Overall for Minifigure Inventory)

brick'em combines scanning, pricing, and inventory tracking into one tool. You scan a minifigure (or a whole tray of them), get an instant ID and BrickLink market price, then add it to your inventory with one tap. No copy-pasting part numbers. No manual price lookups. No switching between three different apps.

Why it works for inventory management:

  • Scan to inventory. The fastest path from "what is this?" to "it's tracked and priced." Point your camera, confirm the match, tap add. Done.
  • Automatic pricing. Every item in your inventory has a market value pulled from BrickLink data. Your total collection value updates in real time.
  • Bulk scanning. Spread 20 figs on a table, photograph them once, and add all 20 to your inventory after confirming identifications. This is what makes it practical for large lots.
  • Search and filter. Need to check if you have a specific fig? Search your inventory by name or ID. No digging through bins.
  • Portfolio view. See your entire collection with total value, individual prices, and quantity tracking. Know exactly where your money is sitting.

The tradeoff: brick'em is built specifically for minifigures and LEGO parts. If you need to track complete sealed sets or non-LEGO items alongside your figs, you'll want to pair it with something broader. But for the core job of managing a minifigure inventory, nothing else combines scanning, pricing, and tracking this tightly.

Cost: Free tier includes unlimited single scans, bulk scans every month, and an inventory collection. Paid plans unlock more bulk scans, additional inventory collections, and extra features. Visit brickem.io/pricing for current plan details.

brick'em tip: After scanning a bulk lot, use the "Add All to Inventory" button to move every identified figure into your tracked collection at once. You'll instantly see your updated portfolio value. Try it free.

2. Spreadsheets (Google Sheets / Excel)

The classic approach. Create columns for item name, BrickLink ID, condition, quantity, purchase price, current value, and status (listed, sold, in stock). Sort and filter as needed. It's free, flexible, and you control everything.

Why people use spreadsheets:

  • Completely free. Google Sheets costs nothing and works from any device.
  • Total control. Build whatever columns, formulas, and tracking logic you want. Track purchase price, sale price, fees, and net profit per item.
  • Familiar. Almost everyone already knows how to use a spreadsheet. No learning curve.
  • Shareable. If you have a business partner or assistant, share the sheet and collaborate in real time.

Where spreadsheets break down:

  • Manual everything. Every item has to be typed in by hand. Every price has to be looked up separately and entered manually. For a 100-piece lot, you're looking at an hour just for data entry.
  • Prices go stale. The value you typed in last month isn't what the figure sells for today. Unless you manually update prices (you won't), your totals are wrong.
  • No identification help. A spreadsheet doesn't know what a minifigure is. You still need another tool to identify each figure before you can even start typing.
  • Error prone. Typos, duplicate rows, wrong columns. As the sheet grows past a few hundred rows, mistakes pile up.

Best for: Sellers with small inventories (under 50 items) who want a free option and don't mind manual work. Also useful as a secondary tracking layer for purchase costs and profit calculations alongside a scanning tool.

Cost: Free.

3. BrickLink Inventory System

If you sell on BrickLink, you already have an inventory system built in. BrickLink's store management lets you list items, track quantities, and see your store's total value. Since it's tied directly to the marketplace, your inventory IS your store listing.

What BrickLink inventory does well:

  • Direct marketplace integration. Your inventory is your storefront. Add an item, set a price, and it's live for buyers immediately.
  • Price guide built in. BrickLink's price guide data is right there. You can see what other sellers are charging and what items have recently sold for.
  • Massive catalog. Every LEGO element, minifigure, set, and part ever made is in the system. You won't find something BrickLink doesn't have.
  • Buyer trust. BrickLink is where serious LEGO buyers shop. Having your inventory there means you're in front of the right audience.

Where it falls short as an inventory tool:

  • Slow data entry. Adding items means searching the catalog, selecting the exact item, choosing condition, setting a price, and confirming. It's thorough but tedious, especially for bulk lots.
  • Only tracks what's listed for sale. If you have items you're holding (not listing yet), BrickLink doesn't give you a great way to track those separately.
  • Platform-locked. Your inventory data lives on BrickLink. If you sell on eBay, Whatnot, or locally, you need a separate system for those channels.
  • No scanning or visual identification. You need to already know what an item is before you can add it. There's no camera, no image matching.

Best for: Sellers who exclusively use BrickLink as their sales channel and want everything in one place. Works well as a storefront but not as a standalone inventory management tool for multi-channel sellers.

Cost: Free to use. BrickLink charges a small commission on sales (3%).

4. Rebrickable

Rebrickable is primarily known for its MOC-building features and set/part databases, but it also has inventory tracking. You can log which sets you own, which parts you have, and see what you could build with your collection. It's a collector's tool first, but sellers can get some use out of it.

What Rebrickable does well:

  • Set-level tracking. Log which sets you own (complete or partial) and Rebrickable automatically calculates which parts you have in your collection.
  • Part-level detail. See exactly which pieces you have down to the individual element. Useful for parting out sets.
  • "Can I build this?" feature. Enter your parts inventory and Rebrickable tells you which MOCs and alternate builds you can make. Fun for collectors.
  • Free tier available. Basic inventory tracking costs nothing.

Where it falls short:

  • Not built for resellers. Rebrickable is designed for builders and collectors, not people trying to price and sell inventory. There's no integrated pricing data.
  • No scanning. Adding items is manual. Search the catalog, select the item, add it to your list.
  • Minifigure tracking is secondary. The strength is in parts and sets. If your inventory is primarily minifigures, you'll find the tracking limited.
  • No marketplace connection. Rebrickable doesn't connect to BrickLink, eBay, or any sales platform. It's a standalone tracker.

Best for: Collectors who want to know exactly what parts they have and what they can build. Also useful for sellers who part out sets and need to track individual elements. Not ideal for minifigure-heavy inventories.

Cost: Free tier with basic features. Premium plans available for advanced features.

5. Pen and Paper / Photo Logs

Don't laugh. A lot of sellers start here, and some never leave. Write down what you have in a notebook. Take a photo of each figure next to a sticky note with the price. Organize by theme or bin number. It works... until it doesn't.

Why some people stick with it:

  • Zero setup. Grab a notebook and a pen. You're done.
  • No tech required. No apps, no accounts, no learning curve.
  • Visual photo logs. Taking a photo of each fig with a handwritten price label creates a quick visual reference you can scroll through on your phone.

Where it falls apart:

  • Not searchable. Need to check if you have a specific figure? Flip through every page. With photos, scroll through hundreds of images.
  • No totals. Want to know your total inventory value? Get out a calculator and add up every line item by hand.
  • Impossible to scale. Past 30-40 items, a paper system becomes a liability. Things get missed, pages get lost, notebooks get buried under other notebooks.
  • No price updates. Whatever you wrote down is static. The market moves. Your notebook doesn't.

Best for: Casual sellers with tiny inventories who aren't doing this regularly. Also fine as a temporary holdover while you set up a real system. But if you're reading this article, you've probably already outgrown pen and paper.

Cost: The price of a notebook.

How to Choose the Right System

It comes down to three things: inventory size, sales volume, and how much manual work you're willing to do.

  • Under 30 items, casual selling? Pen and paper or a simple spreadsheet. Don't overthink it.
  • 30-200 items, regular selling? You need automated pricing and faster data entry. brick'em or BrickLink's built-in system, depending on where you sell.
  • 200+ items, running it like a business? You need scan-to-inventory, automatic pricing, and a portfolio view. This is where brick'em saves the most time. Manual entry at this scale costs hours every week.
  • Primarily a builder/collector? Rebrickable for parts tracking, paired with a pricing tool when you decide to sell.
  • Multi-channel seller (BrickLink + eBay + Whatnot)? Use a standalone inventory tool as your source of truth, then list from there to each platform.

Most serious sellers end up combining two tools. A scanning and inventory tool for the day-to-day, and a spreadsheet for profit/loss tracking and tax records. The key is making the identification and pricing step as fast as possible, because that's where most time gets wasted.

Frequently Asked Questions

What is the best app to catalog a LEGO collection?

It depends on what you're tracking. For minifigures specifically, brick'em lets you scan, identify, price, and catalog in one step. For complete sets and individual parts, Rebrickable offers detailed part-level tracking. For items you're actively selling on BrickLink, their built-in inventory system doubles as your storefront.

How do I keep track of LEGO minifigure prices?

The only reliable source for LEGO minifigure pricing is BrickLink's sales history. You can check it manually on BrickLink's website, or use a tool like brick'em that pulls BrickLink market data automatically for every item in your inventory. Manual tracking in spreadsheets works but goes stale quickly since LEGO prices shift constantly.

Is there a free way to manage LEGO inventory?

Yes. Google Sheets is completely free and flexible enough to handle small inventories. Rebrickable offers a free tier for set and part tracking. BrickLink's inventory system is free to use (they only charge when you sell). And brick'em has a free tier that lets you start scanning and tracking right away. The tradeoff with free options is usually speed. Manual entry takes significantly more time than scan-based tools.

Can I track my LEGO inventory across multiple selling platforms?

BrickLink's inventory only applies to BrickLink. If you sell on multiple platforms (eBay, Whatnot, local meetups), you need a separate system as your master inventory. A standalone tool or spreadsheet works as the source of truth, and you update it as items sell on each platform. The goal is one place that always shows what you currently have in stock.

How often should I update my LEGO inventory values?

LEGO minifigure prices can shift meaningfully within a few weeks, especially around set retirements and new releases. If you're using a tool with automatic pricing (like brick'em), your values stay current without manual effort. If you're tracking manually in a spreadsheet, aim to update high-value items at least monthly. Items under $5 don't need frequent updates.

Related Reading

Stop managing your inventory the hard way. brick'em scans your minifigures, prices them automatically, and tracks everything in one place. No spreadsheets. No manual lookups. No guessing what your collection is worth. Start free today.

Last updated March 10, 2026