You can only do that so many times before they catch on, Not only that when you buy it records the I.P. of purchase so they will investigate. If it was that easy all major online game sellers would be out of business. I'm not saying it can not be done dude but get real if it was that easy all of use would have everything we want for free.
Please my friend do a quick search into online credit card fraud before you risk any money on this! Different than game sellers... you are giving bitcoin which is gone and untraceable the second you send. IP addresses? Investigate? Holy smokes, I hope this is sarcasm.