Catch retail price errors before they're corrected.

Those sites are crowdsourced. Humans post deals they spot. Endless is an anomaly-detection engine: we scan full retailer catalogs on a schedule, store every price, and automatically flag products that drop 30 to 90% between scans, get mispriced across stores, or hit clearance markdown stages most shoppers don't know exist. No waiting on a deal-poster.

The pipeline runs around the clock. Home Depot prices refresh every hour (important because price-error windows often close within hours). Nordstrom Rack refreshes twice a day. Newegg, Best Buy, Walmart, Macy's, Apple Refurbished, and Dick's Sporting Goods each refresh once a day.

We pull directly from each retailer's product API or page payload, the same data their app shows. Inventory and prices update as fast as we scan (every hour for HD). For HD specifically, we cross-reference shelf-tag price, app price, and cents-ending code so penny finds aren’t missed.

Free accounts can browse chain-wide clearance and save up to three stores. Paid plans (starting at $9.99/mo) unlock per-store firehose access, price-drop email alerts, penny-pricing predictions, and early access to fresh scans before they hit the public feed.

Penny pricing is a Home Depot specialty. Their clearance system uses cents-ending codes on shelf tags to signal markdown depth, and items with a price ending in $.01 are pulled from inventory and ring up at $0.01 at the register, regardless of what the tag shows. Penny finds are real and legal. They’re not advertised, only visible in the HD app or by physically scanning the SKU in-store. Other retailers we track don’t use this exact mechanism, but their clearance cycles are tracked and surfaced the same way.

Yes. Penny pricing and clearance markdowns are part of HD's official inventory liquidation process. The price the register rings up is the price you pay. That's how their ZMA (Zero Movement Action) system handles dead inventory. Not every cashier knows the policy, but it's enforced at the corporate level.