The archive is the product.
Every bar below is one real price observation — sourced, timestamped, and immutable. Marks are derived from this archive at read time, so every figure on screen traces back to the sales that produced it. Nobody can reconstruct this record retroactively; it only accrues.
1,987 observations recorded since 15 FEB 2026, counting daily
4 source feeds: eBay listings, BrickLink sold + stock, retail
opened is its own market, never averaged into sealed
retail prints tracked as reference, never as valuation
Marked like an instrument, not a toy.
The category shows you one number and hopes you won't ask where it came from. Sealed shows its work, because the number has to survive an insurance adjuster, an accountant, or an adversary.
Net realizable, beside the gross.
The first number most tools show you is one you can never collect. Sealed deducts marketplace fees, payment processing and shipping at your configured rates, and reframes every figure on the page with one switch.
$15,950 → $13,878 gross → net realizable, at 13% + shipping
Sold comps only. Asks are opinions.
Marks derive exclusively from completed sales, recency-weighted, condition-separated. Live listings are tracked — as the ask side, never as value.
770.00 ⟨533.20 — 782.50⟩
n=15 · the Titanic's live mark, from 15 sold comps
Built for the exit.
Lot-level cost basis, holding periods, and appraisal reports with a documented methodology and a provenance trail: the paperwork that insurance riders, estates and tax returns actually require.
basis → mark → Δ per lot, per condition, per day held
Launching 2026.
early access opens soon · sealedmark.com is the address to watch