1) Even with the crit gem, I dont think this is of very high value. The bleed effect is nice( high proc rate). 300-400k
2) Mid damage, decent LOH -Maybe 800k-1Mil Without crit/crit dam it might be harder to sell.
3) Not much, too low of damage even with Str
4) Tanking DH! LOL I am thinking even with the right gems you will have trouble selling this without resist all.
DISCLAIMER, Shoulders are one of the tougher pieces to get in the game
A) With an arcane stacking monk this would be worth plenty. Otherwise not sure a barb would go after this - 5-7 Mil+
B) 400-500K Resist all needed to make this super sweet.
c) You seem to really like arcane rolls. One again arcane stacking monk low Vit 400K tops