best ive gotten on a bow so far is power1, punch 2, maybe its because i only dump 5 levels into them lol
I don't know that one has ever been sold -- name a price? Edit: I found one that had infinity and some other stuff -- I think he said 8K -- which I will gladly pay
I recommend stopping at 40 for enchants. Over 40 starts losing benefits. Also, picks are better so you can get much more useful enchants, and sell them if you want money. I sold a silk touch, ubr3, eff4 pick for 24k
bows are more effieciently enchanted at lower levels, the cheapest way(xp wise) to get infinity is to repeatedly enchant a bow at lvl 22(seems random but it isnt) this level has the lowest cost/possiblity value for infinity, on average you wont spend more than 6k xp to get a bow with infinity, it might now have anything other than infinity, but it will have infinity