So I'm in the market for my first revolver. I grew up shooting my dad's Super Blackhawk .44 (among several auto's) but this will be my first wheel gun. I'm attempting to keep costs lower by buying used. I'm looking at a Ruger GP-100 or the SP-101 in .357. My question is simple, what do I need to look for in a quality used revolver? What defines a revolver thats been taken care of vs. one that I should stay away from? Right now, the other question is whether or not I can find one used, seems like everyone who has one of these wants to keep it . I'll buy new if I have to but I'm willing to wait it out for a couple months to try and find a used one. I admit that I'm somewhat uneducated in the revolver world and any help would be greatly appriciated. Thanks in advance INGO.