LEGO ROI Calculator
Real, fee-net profit on any LEGO set. eBay's 13.25%, payment processing, and shipping are baked in — not stripped out like the other guys do.
We don't have set {setNumber} yet
Either the set number isn't in our tracked catalog, or it's a polybag / promo that doesn't carry secondary-market signal yet. Try another set above.
How this calculation works
Sealed market value is the median price for sealed-condition sales in the most recent month we have data for. Sample size and the 25th–75th percentile range are shown inline so you can judge confidence.
Platform feesreflect each marketplace's currently-published fee schedule, verified 2026-05-12 against primary sources (links inline next to the platform selector). For eBay: 13.6% on item + shipping for Toys & Hobbies (non-store), plus a per-order fixed fee ($0.30 ≤ $10, $0.40 > $10). Payment processing is included in the FVF under eBay's managed-payments model — there is no separate processor cut. Mercari, BrickLink, and Amazon FBM schedules are sourced and timestamped the same way.
For exact per-transaction fees — including your specific store tier, promotional rate eligibility, and actual processor cuts — connect your seller account in Brickfolio. That feature pulls fees from the official marketplace APIs (eBay Finances, Amazon SP-API) and is substantially more accurate than any public schedule.
Shipping is your input. Real carrier rates depend on origin/destination zone, dimensional weight, and whatever discount your carrier account gets — none of which we can fake credibly. We're wiring real EasyPost rate quotes (UPS / USPS / FedEx) next; until that ships, plug in your own number. The USPS calculator takes about 30 seconds.
What this calculator does not do: sealed-vs-used split for the demand side, retirement timing, or sales-velocity signals. Those live in the paid Brickfolio analytics where they're kept in sync per-set.