How do baseball card pricing magazines work?

sportstar911 asked:


I collect baseball cards and i have a good lot but I want to know what they r worth. But how? What magazines are out there that are good for pricing for baseball cards. But how do i look in the mag for the cards i have? I just dont get it, i havnt looked at a card pricing mag be4 so. Like i dont get how it would have the EXACT and buy prescription drugs every single cards i own and the price. Any explanations baseball card collecters? thanks