I was shopping at one stage, and I found a weapon named Handaxe. It is an 18 bonus damage from my Zwill blades, so I bought one for Basch. I take it to the field, start attacking some Skeletons in Lhusu Mines. It deals from 40-500 damage. I take it to the East Sandsea and it deals 30-700 damage. Is there a reason for this and are there any other weapons like this?