Go to the Orange & White game ... they have a table set up with piles and piles of used football jerseys. I think i remember seeing some basketball jerseys, but mostly football. Reasonably priced at $60 or so.
Oh, btw, the table is at the meet & greet on the practice field.
I have a jersey that Joey Clinkscales (#86) gave me to wear to a Fla game in Gainesville. It's an away jersey from that era. It just sits in a drawer. He told me he wore it during a UGA game. Make me an offer...
It depends on where you find it and the condition of it and the player who wore it and etc etc...I have bought several game used jerseys for $50-60.00...From UT and several other schools for the collection part of the hobby...I used to buy game used UCLA jerseys for around $35.00...I had stacks of them....Now a days some of the DEALERS out there will try and rip you off by selling you one worn by a 2nd string punter for $300.00....Ridiculous...Go to the athletic departments and ASK if they sell the old used jerseys and how much they want....You might be surprised just how cheap they are.