yes you can see prices for graded cards if graded through beckett. I wouldnt waste time with $15-$30 cards unless that is something you really want. If youre looking at it to try and increase value, do it on the high end cards (also gives them good protection) and any older cards you have that are in good shape. my $.02
Looking for all Kirby Puckett I do not have! Have 805 unique Puckett cards, rest listed as wants.