Looking for runes mostly. Ist minimum else I just save it for future use. 
Its more like Um than ist, i sold few of them for an Um, but gl 
Really? I sold the other eth CV pretty cheap but people seem to like Cryptic Axe. Sold the last one for Ist.
i would give you a mal for that one R1fler#2725
If it comes to dps cv and ca are weakest, tresher and giant one are in The middle and ogre axe and gpa are the highest.
Cv has high str req as obvious cons but ca has not that high str req so lower lvl desert guys can equip it, tresher and giant one are quick it means more often proc chance on hit like crushing blow.
Tresher and giant are few ists, while gpa is +
Cv is easiest to obtain - Larzuk will do 4s, other ones u need to find socketed or cube it.
CA 35ias from iased Andy: 2,77 attack/s
Giant tresher 35ias: 3,33 attack/s
Gpa 35ias: 3,12
Tresher 35ias: 3,33
Cv 35ias: 2,77
Gl with your calculations.
Source: d2 lc ias calculator