HuffPost may receive a commission from some purchases made via links on this page. Every item is independently curated by the HuffPost Shopping team. Prices and availability are subject to change. Countless Amazon Prime Days have come and gone, but after being on the sale-reporting frontlines year after year, a few things manage to stay the same: there are just certain products that sell well and sell fast. By carefully dissecting data from official Prime Day this past July, I’m making the