Also, would you want the design of the obverse & reverse on the coin to be the same?
Even if the website was in invisible ink, it would still be there. That gives the coin less of a "currency" feel and more of a website promotion feel. Right now you're the only person (I know of) offering cool cheap bitcoin collectors coins. Take advantage. Even if they're brass now, you are in a position to corner the market, which after some profiting could lead to silver coins, then gold...
I say you should design a new back and sell them for double the price of the ones on your website. Then include one of your website coins for free with every purchase of 2 or more. You'll make more money, your website coins will get to more people, and you could just end up being the exclusive physicial bitcoin supplier once you work out all the kinks in your operation and gather more customers...
I'd definitely buy one made of pure silver without the website listed. Just sell the brass (gold plated) ones to gather the funding needed to get a batch of silver ones made (then discontinue the brass ones and only use that for your website coins, which you will then give away free with the silver ones). I'm excited for you. This is a great opportunity. I'm just an ideas guy, but would love to partner on this with you somehow if you were interested in building a team for this project.
Or just go ahead and toss me a free coin when you get rich.
i totally agree with this premise. i would also like to be able to purchase ones made of gold.
i was one of the earlier buyers of one of these and i love it. but i just cancelled an order for 4 b/c i realize i really don't like the URL promotion.
make these in silver and gold w/o promoting and you'll make alot more in profit.