I like the name hardcoin too.
Hardcoin isnt bad. Duly noted.
Also, theres really no need to take paypal. Most people who would want the physical coins would already have some crypto currency.
Im not convinced of that. Most people posting here, yes, but I think there is a sizable market for ebayers who just want to buy with paypal without going through the hassle of setting up wallet or using exchanges. Its more or less what Im betting on anyway as I doubt I will get the necessary volume from this forum or bitmit alone.
Alternately, if you wanted, you might be able to work with bitinstant, and receive cash transfers through moneygram for orders over a certain amount. Then you get the funds almost immediately, and they can't be reversed.
Thats an idea.
But perhaps I have a better one; what if I were to make paypal purchased, not preloaded coins distinguishable from preloaded ones? I will check with my supplier regarding cost, but I know he is able to print (/laser) colored text on top of the hologram, which is typically used for serial numbers or to customize off the shelve designs. So I could add "preloaded, value guaranteed if unopened" on one batch and "check public key before accepting" or something like that on another batch. Would that work? If the cost is too steep I might just use lightly colored paper for the pub key to distinguish them, though obviously Id prefer it to be more clear.