New to the dually world from N.C

Hello there fellows. Im super new to the dually lifestyle, but not to trucks I've had quite a few s10's and actually building one now. I've always wanted a bagged dually/tow pig since the day i saw my first at a car show in va. I'm in the process of hunting a nice dually down now, and i was wondering what is the normal price you guys have paided or would pay for a 90-00 ccsb dually. Ive found one that i really like but idk if its worth the 6gs or not. Can anyone help me? I guess Im asking what should I be looking for and what should I stay away from? Thanks guys for your help. Looking forward to learning alot more about these trucks and getting my own.