This purports itself to be the end-all be all of baseball price guides. It isn't. I recently began pricing out my entire collection and have more than a few "off-brand" cards from my youth. O'Pee Chee Premier of the early 90s, Quaker Oat cards, Post cereal cards, Toys R' Us, Donruss Baseball's Best, a number of mid-80s Fleer "All star" sets, K-Mart Memorable Moments, etc. I bought this assuming that all of these and more would be included, and none of them are. This will give you a few of the off-brand sets such as Topps Glossy from the mid-80s, but really the apparently purpose of this is to tell you the actual price of every freaking card in the regular sets. Yep, all 792 of them. So if you want to know exactly how much that 1987 Topps Mike Laga is (.01, like every other common card) or your 1993 Upper Deck Bill Swift, then this is the price guide for you. If you are a normal person and can gauge how much your commons are worth from the monthly Beckett, you're fine without it.