Bukkit

I would love to see a refund option, if the enchantment could not be done.

Also, it can be great to change the level price of the enchant for example, level 3 sharpness would be only if you use an enchantment using 40+ levels

Yea I'm working on the refund option. Its only a major issue if the enchant is disabled.

I've been thinking about how to change the level price but I have to find a way to do it with no player involvement.

I'm still working on a "real" solution. The cost comes from the level the user selects in the enchantment table. The best solution I can think of is to let the admin limit those levels.

I could recalculate them after I determine what enchants to replace the bad enchants with. This would take some of the risk out of enchanting however.

I've uploaded a temp fix that cancels the enchant if its max enchant value is less than zero. This means that if sharpness's max level is zero and a you get a sharpness 5, fire aspect sword you will have to retry for a sword without the sharpness.

Maybe it's possible to do something afterwards, that would be kinda ugly lol