40kish
2) 25-35kish
3) Use the sticky above again : 50k-60kish
4) This is a buyers market, so it could go for as little as 100 gold, or as much as 20k, I'd take an offer for anything pretty much or try and spam it at whatever price you think it'd sell at. I'd go no higher then 25k though, it would become a hard sell.