Steam Cards Bulk Seller by f00d4tehg0dz

A cross-browser extension for bulk-listing Steam trading cards on the Steam Community Market. Verified against inventories of 10,000+ cards. Configurable rate-limited queues keep Steam happy; a persistent price cache keeps repeat runs fast.

Paginated inventory fetch — handles very large inventories.
Trading-card filter — Normal / Foil toggle, marketable-only guard.
Bulk price lookup with persistent cache.
Sort by price / name / foil-first once prices are loaded.
Configurable +/- % pricing modifier — quick-sell, undercut, or list above lowest.
Rate-limited queues with exponential backoff (2s → 32s).
Exact fee math — ports Steam's CalculateFeeAmount.
Mobile confirmation preserved as Steam requires it per listing; this extension queues listings correctly, you approve them on the Steam Mobile app.