Ok, I got two bows.

1st bow:
Bow of HILFIN
Charm: 5
Damage: 58-149
8 to agi
2 to offense
2 to sight
speed: 6
Recovery time: 0 sec
value:10k

2nd bow:
Bow of HILFIN
Charm: 5
Damage: 58-149
10 to agi
2 to offense
5 to sight
speed: 2
Recovery time: 1 sec
Durability: 10
value: 15k

Durability of 10 will be a pain in long run because I have to repair it often.
I am not sure if extra 2 to agi is a factor that gives it more money...

Anyway, has anyone come up with a better bow than mine before hitting the gong? I appreciated if you can tell me how you got your best bow.