With the exception of some items of goods, all the rest you can return to the store if something did not fit you or you changed your mind. But at the same time you need to follow some of the rules, they relate to the timing of the return and the obligatory presence of a check or receipt of the acquisition of things. Our hero in the game Keep the Receipt has got a brand new vacuum cleaner robot. Having worked a bit with him, he found the same in the online store, but for a lower price. This prompted him to the idea that the goods can be returned, and instead buy a new one and still have money. It remains to find a purchase receipt, in haste, he hid it somewhere and now can not find.