Why price trackers should bind product IDs once instead of matching names daily

Price-tracking systems commonly use string matching to link catalogue entries to retailer listings, but this approach fails silently with PC hardware where minor naming differences indicate distinct products. A single extra suffix, capacity variant, or buried letter can cause a system to consistently pull prices for the wrong item while appearing to function correctly. The proposed fix separates the matching process into two distinct stages: a slow, human-reviewed resolution step that permanently binds a product to a specific retailer ID, and a fast daily pricing step that simply queries that pre-confirmed ID. This means string comparison runs rarely and its results can be audited, rather than re-deciding product identity on every pricing cycle. A lightweight daily check still flags whether a retailer has quietly swapped the product behind an ID, acting as a safety net rather than a primary matching mechanism.