PC on Q9 stormbow

Sundering Storm Bow of Fortitude

Piercing Dmg: 15-28(Requires 9 Marksmanship)
Damage+14%(While Enchanted)
Armour Penetration +20% (Chance: 20%)
Health +30

not sure if this helps.
sold q10 clean stormbow inscribable for 40k very quickly, see q9 for 60-80k
If yours isn't inscribable the value maybe a fraction thereof given that 14 enchanted isn't max.

salvage mods and merch if it not insc

If it is noninscribable just salvage the 20/20 and the +30hp, the bow itself is merch food.