The most store bought items ever are phones.
Shirts.
Sunflower seeds
It depends on several things. The consumer laws of the country where you bought it being the main one. In general, if an item is broken when you buy it then most stores will replace it if you produce the receipt.
Most things are "store bought" for instance a cake would have store bought products in it. Not sure what you mean here.
milk A local Hyvee, during a recent gathering released the info that their most sold product of the year was...Mountain Dew. Milk was second followed by Pepsi.
Something gets called the best tax preparation software for sale in store because it has the bed rating when being bought and they also its the software is being the most bought.
sunglasses
I have never seen a case where an item can be lost. However, if you use an item then it most likely will not return to your storage. If you are talking about store bought items then the circumstances could possibly be different. For example, if you don't use an item for a certain amount of time it might disappear.
toatoy's
Usually if you are going to the Dallas Cowboy Pro store you would be looking to purchase Dallas Cowboy apparel, gear and merchandise. The most common item bought would probably be a jersey.
A Seinfeld DVD box set can be bought from many different stores, online and offline. The most reliable source is the online store Amazon, which has the item in stock.
Gasoline is the most bought item (by dollar volume) with a credit card, representing over 10% of credit card sales volume. (original answer) I'm pretty sure jewelry is the most thing bought with a credit card