LEGO Reseller Profit Calculator
Enter your buy price, sell price, and shipping cost. See your net profit, margin, and ROI across every major selling platform side by side.
What you paid per unit
Expected sell price per unit
12.9% + $0.30 per order
Optional. Per unit cost to ship.
Number of units to sell
How to Use the Profit Calculator
Enter your numbers
Type in what you paid for the item (buy price) and what you plan to sell it for (sell price). Add shipping costs if the buyer isn’t covering them. Set the quantity if you have multiples of the same item.
Pick your platform
Select the platform you plan to sell on from the dropdown. The calculator knows the exact fee structure for eBay, BrickLink, Whatnot, Mercari, and Facebook Marketplace. Fees are applied automatically.
Compare and decide
Hit Calculate and see your net profit, profit margin, and ROI for the selected platform. Then scroll down to the comparison table to see how every platform stacks up side by side. The best option is highlighted automatically.
Understanding LEGO Reselling Fees
Every selling platform takes a cut. The difference between a profitable flip and a break-even one often comes down to which platform you choose. A $20 minifigure that costs you $8 seems like easy money until you factor in 13% in eBay fees and $5 in shipping. Suddenly your "$12 profit" is more like $4. Knowing the real numbers before you list is the difference between building a business and spinning your wheels.
This calculator shows you the actual take-home profit after platform fees, payment processing, and shipping costs. No estimates, no rounding. The exact math for every major LEGO selling platform.
Platform Fee Breakdown
eBay charges 12.9% of the total sale price plus a fixed $0.30 per order. This applies to both auction and fixed-price listings. eBay has the largest general audience, which means faster sales for popular items but more competition on common figs.
BrickLink takes a 10% commission plus 3% payment processing, totaling 13% of the sale. Despite the slightly higher percentage, BrickLink buyers are LEGO-specific and often willing to pay fair market prices without haggling. The platform is the gold standard for minifigure resellers.
Whatnot charges a flat 9.5% with no additional processing fees. The live auction format can push prices above market average for rare or desirable items, making it one of the highest net-profit platforms when items sell competitively.
Mercari takes a flat 10% selling fee. Simple pricing, decent audience. Good for quick sales of sets and larger lots where the buyer wants a straightforward transaction.
Facebook Marketplace is the wildcard. Local pickup sales have zero fees, making it the most profitable option on paper. Shipped orders take a 5% cut. The trade-off is that Facebook buyers tend to negotiate harder and no-show more often, so factor in your time.
Tips for Maximizing Resale Profit
Match the item to the platform. High-value individual minifigures sell best on BrickLink where buyers pay market price without haggling. Bulk lots and larger sets move faster on eBay or Whatnot. Common figs or sets under $15 are often most profitable as local pickup on Facebook Marketplace since shipping would eat the margin.
Don't ignore shipping as a cost center. A $3.50 USPS First Class label on a $10 minifigure sale is 35% of the sale price going to shipping alone. Offering free shipping to stay competitive means that cost comes straight out of your profit. Factor it in before you price.
Buy smarter, not cheaper. The best margins come from buying underpriced lots where the seller doesn't know the value of individual figures. A $50 bulk lot with three $20+ figures inside is a better buy than sniping individual figs at auction for 10% below market. Use the brick'em lot calculator to evaluate bulk purchases before you commit.
Frequently Asked Questions
What are BrickLink seller fees?
BrickLink charges a 10% commission on the sale price of each order, plus a 3% payment processing fee. That means for every $100 sale, you pay $13 in total fees. There are no listing fees or monthly subscription costs for basic stores, which makes BrickLink one of the more affordable platforms for LEGO sellers once you factor in the dedicated buyer audience.
What are eBay fees for LEGO?
eBay charges a 12.9% final value fee plus $0.30 per order for most LEGO sales. So on a $100 sale, you pay $13.20 in fees. eBay also charges additional fees for promoted listings and optional listing upgrades, but the base rate applies to standard fixed-price or auction listings. Keep in mind that eBay has a much larger general audience compared to LEGO-specific platforms.
Which platform is best for selling LEGO?
It depends on what you are selling and how you want to sell it. BrickLink has the most knowledgeable LEGO buyers and lowest fees for the value, but sales can be slower. eBay reaches the widest audience. Whatnot is great for live auctions and lot sales. Facebook Marketplace has zero fees for local pickup, making it the best for large or heavy items. This calculator shows you the exact profit difference so you can pick the right platform for each item.
How do I calculate LEGO resale profit?
Subtract your total costs from your sell price. Total costs include what you paid for the item (buy price), shipping costs, and platform selling fees. Platform fees vary: eBay takes 12.9% plus $0.30, BrickLink takes 13%, Whatnot takes 9.5%, Mercari takes 10%, and Facebook Marketplace takes 0% for local or 5% for shipped items. This calculator does all the math for you and shows the comparison across every platform at once.
What are Whatnot seller fees?
Whatnot charges a flat 9.5% seller fee on the final sale price. There are no additional payment processing fees or listing fees. Whatnot is popular for live auction sales of LEGO minifigures and sets, where the interactive format can drive prices higher than fixed listings on other platforms.
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