if you know what to look for and know prices of guns good you can make out decintly..ive only been to a few but i know alot about guns and the people i was with sell them for a living and i learned more and they told me what was decint and such..and alot of guys will trade or negotiate sometimes..they are one of the best places to find old military stuff...now i do more sitting behind the tables and selling instead of shopping..i dont have money to shop anyway...that will all change soon when i turn 16 and get a job..getting a good blue book on used guns can be very helpful for used rifle shoppers...alot of people mark up just above blus book value...good luck...