Coin looks great as does wallet but you cant go charging 8000 - 30,000 on buy first get in cheaper basis.  nobodys gonna wanna pay double or more than the first price. And even 8000 sats is pretty damn expensive. Youd be better off having 1 price, much fairer and youd prob raise more in the end.  Good luck raising 2200 BTCs in todays scene with those prices!!??