Shiiireban: a supplier-stock watcher for eBay sellers

Field notes

Supplier URLs are parsed first for structured data; the page says this route works for roughly two-thirds of pages it has measured, with HTML rules used for the rest. It says extraction rules are rebuilt after supplier-site changes. Check intervals are targets, not guarantees: adding many products from one supplier lengthens them, while listings whose stock changes receive priority. The service also describes safeguards that hold an eBay listing untouched when stock indicators conflict or a price falls by more than half.