If you have been out of the hobby for a while then check out the price guide carefully to see if it even has the prices listed for the cards you're interested in. There are quite a few cards from the 90s and 2000s that aren't even listed anymore, and are only found in the annual price guide or online pricing. The monthly sports magazine is even worse as they usually only price a few key cards from each set along with a few newer sets.
Collecting John Stockton, Karl Malone, Ivan Rodriguez, Gary Carter & UF player rookie year cards. Plus Jedd Gyorko rookie and prospect cards.
Jedd Gyorko 2010-2013: Have 329/419 including 1/1s
Wantlist: http://sites.google.com/site/sportscardsite/set-needs/
Jedd Gyorko 2010-2013: Have 329/419 including 1/1s
Wantlist: http://sites.google.com/site/sportscardsite/set-needs/