Shoot me an PM with the following:
1) Your stats
2) FULL gear setup focusing on just ranged and pray bonuses (more bonuses=the cheaper it gets)
3) Best in slot food (per bite)
4) Ranging pots (Yes/No)
5) Sweets (not required, even for 1 def pures)
However, basing on Bone cbow it'll be definitely around $100 usd, it's horrible weapon.