LEGO Reselling SOP: A Step-by-Step Workflow Guide

A LEGO reselling SOP is a written, repeatable set of steps covering sourcing, sorting, pricing, listing, and shipping, so your business runs the same way every time instead of depending on memory. If you have ever priced the same minifigure two different ways in one week, you already know why this matters more than it sounds like it should.

I started documenting my own process after I caught myself doing exactly that, pricing a figure from memory one day and from a quick BrickLink check the next, and getting two different numbers. From what I've learned running brick'em and selling LEGO myself, the sellers who scale past a hobby income are almost always the ones who wrote their process down before they had to.

Key takeaways:

• An SOP turns sourcing, sorting, pricing, listing, and shipping into checklists instead of memory
• Map your current workflow before you try to improve it
• Anchor pricing to one source of truth, like BrickLink sold data, with a documented markup per platform
• Route inventory to the platform that actually performs best for that category
• Update the SOP the moment reality drifts from what is written down

What Is a LEGO Reselling SOP and Why Do You Need One?

A LEGO reselling SOP is a written, repeatable checklist for every stage of your business, sourcing, sorting, pricing, listing, and shipping, so the process runs the same way every time instead of living in your head. I started writing mine down after I realized I was pricing the same minifigure two different ways in the same week, once from memory and once from a quick BrickLink check, and getting two different answers.

Most solo LEGO resellers never write anything down because the business starts small. You buy a bulk lot, sort it on the kitchen table, list a few figures, and ship what sells. That works fine at ten listings a week. It falls apart at a hundred, and it falls apart even faster the moment you bring on a helper, a partner, or a virtual assistant who has never seen how you actually work.

An SOP is not corporate paperwork. It is the difference between a business you can step away from for a weekend and one that stalls the second you do.

How Do You Map Your Current LEGO Reselling Workflow?

Start by writing down, in order, every single step you already take from the moment inventory arrives to the moment a buyer leaves feedback. Do this before you try to improve anything. You cannot fix a process you have not written down, and most sellers are surprised by how many small decisions they make on autopilot.

Grab a notebook or a spreadsheet and walk through your last bulk lot purchase step by step. Where did it come from, Facebook Marketplace, a garage sale, an estate sale? How did you sort it? Where did you check pricing? Which platform did you list on first, and why that one? Write it all down exactly as it happened, mistakes included.

In my experience, this mapping step is where most sellers find their first real bottleneck. Usually it is sorting or pricing, the two steps that eat the most time and have the least consistency between sessions.

Sourcing SOP: What Should You Standardize First?

Your sourcing SOP should standardize where you look, how much you are willing to pay relative to resale value, and how you evaluate a lot before buying, all written down so you are not making a new judgment call every time an opportunity shows up. Sourcing is where a lot of profit gets made or lost before a single item is ever listed.

Facebook Marketplace is a gold mine for people clearing out old bins of bricks, and I recommend building a simple rule for what counts as a worthwhile lot before you even message the seller. A lot heavy on minifigures and complete sets is usually worth more per pound than a bin of loose basic bricks. If you want a fast gut check on whether a bulk lot is worth the drive, running the numbers through brick'em's haul calculator before you commit can save you from a wasted trip.

Write down your safety rules too. Meeting in a public, well lit spot, a police station parking lot works well, is not overkill. The LEGO resale business can attract the wrong kind of attention when a buyer shows up with cash, and a simple SOP line like "meet at the district station on Elm" removes the guesswork every single time.

How Should You Sort and Identify Inventory Consistently?

Your sorting SOP should define exactly how incoming inventory gets separated into minifigures, sealed sets, loose parts, and instructions, plus how each category gets identified before it moves to pricing. Skipping this step is how sellers end up with a garage full of unsorted totes they never touch again.

When I sort a new lot, minifigures come out first because they are usually the highest value per item and the easiest to misidentify by memory alone. I've seen sellers guess a figure is a common variant when it is actually a rare printing worth ten times as much. That is exactly the kind of mistake a documented identification step is supposed to catch. Running figures through brick'em's LEGO minifigure database as part of your standard sorting step turns a guess into a confirmed identification, and it is a habit worth building into the SOP itself rather than treating as optional.

Incomplete sets deserve their own line in the SOP too. A lot of sellers I know used to toss sets missing a few pieces straight into a bulk bin. Once you write "check BrickLink for missing parts before bulk-binning" into your process, incomplete sets stop being junk and start being fixable inventory with real margin in them.

Pricing SOP: How Do You Keep Prices Consistent Across Platforms?

Your pricing SOP should set one source of truth for value, usually BrickLink sold data, and a documented markup or discount rule for each platform you sell on, so two people pricing the same item land on the same number. Without this, pricing turns into a mood, and moods are not a business process.

BrickLink functions like the Wall Street of LEGO for pricing accuracy, and I check it before I trust my own memory on almost anything above a few dollars. From what I've learned selling on eBay, where I have sold over $100,000 worth of LEGO over the years, pricing 30 to 50 percent under recent BrickLink sold comps on eBay tends to move an item within 24 to 48 hours, while Whatnot buyers will sometimes pay 20 to 30 percent above that same market number during a good live show because of the energy and competition in the room. Your SOP should spell out that gap explicitly, platform by platform, instead of leaving it to guesswork on show night.

If you want a running number for what your shelf inventory is actually worth using current market data, plugging your catalog into brick'em's LEGO collection value calculator is a lot faster than pricing every item by hand, and it gives new team members a consistent benchmark to check their pricing against.

Listing SOP: Which Platform Gets Which Item?

Your listing SOP should assign each inventory category to a default platform based on how that platform actually performs for that type of item, so you are not re-deciding the same routing question on every listing. Character-driven, story-rich minifigures like Star Wars or Marvel tend to do well nearly everywhere. Slower, more niche categories need a narrower lane.

Here is roughly how I route inventory, and it is worth writing your own version of this table into your SOP document.

Inventory Type	Best Fit Platform	Why
High-demand minifigures (Star Wars, Marvel)	Whatnot or eBay	Broad demand, fast sell-through
Individual parts and low-dollar pieces	BrickLink	Buyer covers shipping, low fees on small sales
Bulk lots and mixed bins	Facebook Marketplace or local pickup	Avoids per-item shipping cost
Sealed sets and modulars	eBay or BrickLink	Collector audience, higher average order value
Niche themes like Harry Potter	BrickLink	Slower moving, benefits from patient, searchable listings

Whatnot works especially well for categories with a loyal built-in fan base. My first show only had about 10 people watching and still did over $500 in sales, which told me the platform's upside was real even with a tiny audience. I've also found that spending roughly $20 per show on boosted promotion near the start of a stream helps pull in early viewers who then stick around, and that is now a fixed line item in my own show-day SOP rather than something I decide on the fly.

Packing and Shipping SOP: What Belongs in the Checklist?

Your packing SOP should list the exact materials, bag sizes, and photo steps for each inventory category so every shipment looks the same and buyers get a consistent experience. This is the part of the business that most directly affects your feedback score and repeat buyers, and it is also the easiest part to standardize.

• Photograph the item again right before boxing, timestamped, in case of a damage claim
• Use a labeled poly bag per minifigure, never loose in a box with parts
• Confirm the buyer's shipping address matches the platform's paid order, not a message thread
• Weigh the package before buying postage to avoid a postage due return
• Add tracking to every order over roughly $15 in value

I learned the timestamped photo step the hard way after a shipping dispute I could not resolve without proof of condition at packing time. It is now a non-negotiable line in every SOP I write, and it takes maybe fifteen seconds per package.

How Do You Turn an SOP Into Something Your Team Actually Follows?

An SOP only works if it lives somewhere your team checks daily and gets updated the moment a step changes, not buried in a document nobody opens after the first week. Write it, but also build a habit of reviewing it out loud with anyone helping you run the business.

I use a simple shared doc broken into the same sections as this article: sourcing, sorting, pricing, listing, and shipping, alongside the account everyone on the team already logs into when they sign up for brick'em to scan and price inventory. Each section is a short checklist, not a paragraph, because checklists get followed and paragraphs get skimmed. When I onboard help, I recommend they shadow one full lot from source to shipped order before they touch inventory alone, checking off each SOP line as they go.

If you are still running everything solo, the SOP still matters. It becomes your own quality control, the thing that keeps a rushed Tuesday from producing worse listings than a calm Sunday.

When Should You Update Your SOP?

Update your SOP the moment you catch yourself doing something differently than what is written down, not on some fixed quarterly schedule, because the gap between the document and reality is exactly where mistakes creep in. Treat every mistake as a prompt to add or fix a line.

A seller I know updates his pricing SOP every time a platform changes its fee structure or promoted listing rules, since those changes shift which platform should get which item. That habit alone has kept his routing table more accurate than sellers who set a process once and never touch it again.

Frequently Asked Questions

What is the simplest way to start a LEGO reselling SOP?

Start by writing down your last full transaction, from sourcing to shipping, exactly as it happened. Turn each step into a short checklist item. You do not need software or formatting, just an honest, ordered list you can hand to someone else and have them follow without asking you questions.

How detailed should a LEGO reselling SOP be?

Detailed enough that someone unfamiliar with your business could follow it without guessing, but not so detailed it becomes a wall of text nobody reads. Short checklist items per stage, sourcing, sorting, pricing, listing, shipping, usually work better than long narrative paragraphs.

Should pricing rules be part of my SOP even if I sell solo?

Yes. Solo sellers drift on pricing just as much as teams do, especially across a busy week. A written pricing SOP, anchored to BrickLink sold data with a documented markup per platform, keeps your own decisions consistent even when nobody else is checking your work.

Do I need different SOPs for each selling platform?

You need one shared sourcing and sorting SOP, then a short platform-specific section for listing and pricing since eBay, Whatnot, BrickLink, and Facebook Marketplace behave differently. Most of the workflow overlaps. Only the last mile, listing format and pricing offset, really needs to branch by platform.

How do I get my team to actually follow the SOP?

Keep it as short checklists in a shared, always-open document, and have new help shadow one complete transaction while checking off each line themselves. People follow processes they helped run once far more reliably than processes they were only told about.