So I'm trying to determine if I want to have an A2 stock on my 6.8 build, and a guy has a brand new one he took off his bushmaster complete buffer tube with spring and buffer. He says $50 shipped is that a good deal? Secondly if I didn't like it would I be able to re-sell for that?

They're $80 new from bushmaster, that sounds fair.

Sounds like a fair deal.
The problem is that sooo many people want a flat top and collapsible stock the A2 uppers, A2 stocks, and even USGI type 6-positions are hard to sell.
I had 3-4 A2 stocks that had a 25$ price tag on them and two A2 uppers (with forward assist and dust cover) at $80 at the last gun show and no interest at all.
Kinda like A2 or M4 issue hand guards and a2 pistol grips, can't give them away.