Something specific happens to WooCommerce stores around the 500-SKU mark. The stock manager that worked beautifully at 100 SKUs starts to feel sluggish. Bulk operations that took seconds now take minutes. The admin dashboard that loaded instantly now has noticeable lag. Stock counts that always matched physical inventory start to drift in ways that are hard to explain. These aren't symptoms of bad operations - they're symptoms of a catalog crossing the threshold where small-store WooCommerce stock manager tools stop scaling. This article covers what changes at the 500-SKU threshold, why most WooCommerce stock manager tools weren't built for catalogs [...]