PC on a couple of grape axes

Sundering Serpent Axe of Fortitude
6-28 Req 11
13% while enchanted
20/20
+30 HP

Sundering Sephis Axe of Fortitude
6-28 Req 10
14% while enchanted
20/20
+30 HP

Poisonous Dwarven Axe
6-28 Req 9
+16%<50

besides pc, is it worth risking to salvage off the poison grip from the dwarven? (to add in better mods)

ty for the help

Definitely not worth it to salvage the Dwarven.

serpent- 20k~30k with this upgrades....u shouldnt put them on it
sephis- if its not inscribable,u should merch it...but upgrades...just try to salvage it
dwarven- 20~ for the skin

what mods do u think i should put to get the most value out of all/any of them?

The general rule of selling weapons is: mods doesn't change price.