From DBWiki
You are allowed to charge anything that you want when re-selling files via Bitmunk. Keep in mind that there are many other people out there that can be selling the same work, thus you are competing against all the other sellers to provide the buyer with the best value. If you charge a price that is too high, the buyers will go to another seller. If you charge a price that is too low, the buyers can swamp your sales software and you won't be able to pay for your bandwidth fees that your ISP might charge you.