Delicious Library is described as 'Catalog your books, movies, music, software, toys, tools, electronics, & video games in a nice interface. Import all your stuff onto your digital shelves using your Mac’s iSight webcam, our wireless barcode scanner, or your keyboard' and is a popular Media Manager in the audio & music category. There are more than 50 alternatives to Delicious Library for a variety of platforms, including Windows, Mac, iPhone, Linux and Web-based apps. The best Delicious Library alternative is Foliate, which is both free and Open Source. Other great apps like Delicious Library are GCstar, Tellico, Kavita and Where Is It?.
You can't find collector's editions via barcode. You can search for images but then there is still the price missing, because it only shows the "normal" price. Different versions of games (e.g. Nintendo Selects) won't be shown. Especially for collectors it can make a big different if it is the "normal" or "different" edition, which makes also a big difference in price.