I don't see too many that cheap. I bought my 3500 dually sclb for $4250, rebuilt auto.
I don't see many second gen for less than 4, but they might just get eaten up before I've seen any...
My mantra is it's worth what someone is willing to pay for it.
You don't mention 2500/3500
2003 gmc 1500hd quadrasteer "Miley"
2000 jeep cherokee "Herman"
1977 Ranger 150a bass boat
1987 Yamaha Moto 4 quad