Max dmg bow

Just doing a price check (and maybe selling) a bow I have

Its a gold longbow type thing with

15-28 earth dmg (11 req.)
18% more dmg when health < 50%
+1 marksmanship (16% chance)

I know its probably a POS but hey, I might as well ask.

I'd say 5k at the most. +dmg < 50% is not a very desirable mod, and neither is +marksmanship.