Sources & attribution

Catalog backbone: every set, theme, part count, and set image. Refreshed daily from their open CSV downloads.

COBI's official US store catalog: current sets with piece counts, USD retail prices, categories, and images. Coverage is the in-production catalog only — no retired sets or release years yet.

Current catalogs from each brand's official store (decadastore.com, mouldkingcorp.com, pantasy.com, lumibricks.com): set numbers, prices, images, and piece counts where the store publishes them as text. No release years — those show as dashes.

Reobrix's own web store (reobrix.com): current sets from its product sitemap and product pages, with piece counts, EUR prices, images, and live stock status. No release years — those show as dashes.

BRIXIES' own Shopify store (brixies.de): the LEGO-compatible BRIXIES Plus line only, with EUR prices, piece counts, images, and live stock status. No release years — those show as dashes.

Resellers (NL/AT): Arcifex, Snoopy's Brick Shop, Blokkenpiloot, BrickFever, Brickminded and Brick4Brick. We read each shop's public product feed (price and stock), match items to sets by set number, and show them as verified offers with the shop's standard shipping terms. Plain links, no affiliate tracking.

Availability signal for the Netherlands, Belgium and Germany: which sets are listed for sale right now, straight from LEGO.com's own robots.txt-published product sitemaps for each market — sitemap URLs only, no page scraping.

Planned: retail prices (RRP), launch/exit dates, minifig counts, and availability via the Brickset API.

Planned: aftermarket price guide snapshots for retired-set price history.