Man, that is a steal. I just spent the last couple of weeks trying to find a replacement truck for my youngest son (84 yr old lady hit him and totaled his truck). In my area, there is nothing even close to the deal you got. Saw a same year model regular cab with 125k miles and they wanted $8,500 for it.
There normally isn't in my area either. I made a habit of checking the smaller classified papers and such as prices on Craiglist and most online stuff was really high.