Two thrift stores under the same brand can carry completely different merchandise. The difference comes from where donations originate and from the sorting process that happens before anything reaches a rack.
Supply is local and unplanned
Unlike a retailer that orders inventory, a thrift store receives whatever people bring to its door, so the catchment area determines the goods.
Neighborhoods with frequent household turnover generate more donations, because moving, downsizing and estate clearances are the events that produce full carloads rather than single bags.
Areas with higher-priced retail nearby tend to yield donations of items that were expensive when new, which is why certain locations develop reputations among regular shoppers.
Sorting removes most of what arrives
A large share of donated material never reaches the sales floor, because it is damaged, stained, incomplete, out of season or simply beyond the space available.
Sorters work quickly against volume targets, making rapid judgments about condition and salability, and the pace means some valuable items are missed in both directions.
Rejected textiles are typically baled and sold by weight into secondary markets, which is a revenue stream and also the reason donation quality affects an organization's finances.
Pricing is a policy, not a valuation
Most stores price by category rather than by item, assigning a standard figure to a shirt or a pair of jeans regardless of what it originally cost.
Category pricing is fast and consistent, but it means a designer garment and a discount-store garment can carry the same tag if nobody flagged the difference.
Chains increasingly route identified high-value items to online channels, which is efficient for the organization and removes the finds that once defined in-store shopping.
Rotation is enforced by space
Floor space is fixed while donations arrive continuously, so unsold merchandise is pulled on a schedule to make room rather than being marked down indefinitely.
Color-tag systems and rolling discount days exist to clear that inventory predictably, which is why regular shoppers learn a store's cycle rather than its stock.
Items removed from the floor move to outlet locations or bulk sale, and the pricing there is usually by weight rather than by piece.
Resellers changed the dynamics
Online resale platforms made it practical to buy secondhand goods for resale at scale, and that demand competes directly with individual shoppers.
Stores have responded with purchase limits, staggered restocking and their own online listings, effectively capturing more of the value that resellers were extracting.
The result is a market where a store's stock reflects donation patterns, sorting decisions and channel strategy well before a shopper ever sees a rack.