If you have ever tried to search for an item on eBay using the UPC or ISBN code you may have gotten an error similar to this:

You get this error because eBay is assuming you are trying to find the item number of a particular listing.  This is a huge pain for buyers trying to do some comparison shopping and for sellers trying to research prices for potential products.  The search bar below is a simple way to get the actual results you are looking for.  All you need to do is add a UPC or ISBN into the box and once you click submit your results will open in a new tab/window.