Bows

I know this is a bit of a strange question to ask but does anyone know somewhere to get really good bows, I know they can be droped virtually anywhere, but can anyone tell me if they know of anywhere that has good chances of droping good bows, iv been level 20 fora while now and i cant seem to find any good bows, or any for sale.

There's a type of bow called Eternal Bow that drops in the Underworld. It's not much different from the other bows you find else where, it just looks different.