Is there a private API for a particular store's prices? It seems like coupled with couponing, you can build a decent price tracker that can tell you if you're

Is there a private API for a particular store's prices? It seems like coupled with couponing, you can build a decent price tracker that can tell you if you're actually getting a good deal. (like https://camelcamelcamel.com/ https://camelcamelcamel.com/ for amazon, https://steamdb.info/sales/ https://steamdb.info/sales/ for steam games) Otherwise I've noticed that many(though not all) coupons are for items which recently had their base price increased to make the coupon seem like a better deal than you're actually saving.