How SoldBrick Works
SoldBrick answers one question honestly: what did this LEGO set actually sell for? Here’s exactly how we get there.
Where the data comes from
We collect recent completed (sold) eBay listings for each set — the price the buyer actually paid, including shipping. We deliberately ignore active “asking” listings, which sit at aspirational prices that often never clear. We display the individual sold listings (title, date, price and a link) so you can verify every median yourself.
What we include — and what we leave out
SoldBrick prices retail LEGO sets that have a real secondary market — the ones collectors actually buy and sell on eBay in meaningful numbers. We deliberately leave out:
- Employee & VIP exclusives (e.g. LEGO Inside Tour sets) and convention exclusives (Comic-Con give-aways) — they trade only a few times a decade, so any “value” is a single anecdote, not a market.
- Promo and one-off sets with no repeatable sales history.
- Minifigure-only sales, loose parts and bulk lots — filtered out so they can’t drag down a set’s median.
This is a transparency choice. Other guides pad their “most valuable” rankings with five-figure rarities almost nobody can buy, priced off one or two sales. We’d rather cover the sets you can actually trade and give you a number you can trust — which is also why we show the individual sales behind every median.
How we split by condition
Each sold listing is classified into one of three buckets from its title and eBay condition field:
- Sealed — new, factory-sealed (MISB/NISB).
- Used — complete — opened or built, all pieces present.
- Incomplete — missing pieces, box or instructions.
We drop listings that would contaminate the medians — multi-set lots, bundles, and minifigure-only sales — and we require the set number (or, for vintage sets, the name) to appear so broad-match results don’t leak in.
The numbers we show
For each condition we show the median sold price (more robust to outliers than an average) and the 25th–75th percentile range. The seller net is the median × 0.87 — roughly what you keep after eBay’s ~13% final-value fee. We don’t headline a single blended “average price”, because lumping conditions together hides the information that matters.
How we make money
The tool is free. When you click through to eBay we may earn an affiliate commission via the eBay Partner Network, at no cost to you. That’s our only relationship with eBay — it doesn’t influence the prices we report, which come straight from completed sales. We may also link to display-case retailers as affiliates.
Limitations — read this
These are estimates of recent market prices, not appraisals. Sample sizes vary (we flag thin data), condition classification from a title is imperfect, and prices move. For a high-value set, always confirm against current completed listings before buying or selling. SoldBrick is independent and not affiliated with The LEGO Group; LEGO® is their trademark.