At this current moment, my endeavor has been put on hold mainly because I am trying to work something out with paypal in regards to these types of transactions. The seller is honestly the one that will always be at risk in these situations because there is simply no stopping a reversal with digital goods. The only way to combat this, is to ship out a paper wallet with tracking and insurance, or ship out simply the receipt of purchase as a physical good. This would then require atleast 1 day users have to wait to receive it, and users can still claim it as not described or not working which poses another threat. Ideally, if there is a company that can truly offer a Bitcoin Paypal service, they can greatly succeed. I can honestly say that Paypal has worked with me and does allow me to accept payment for bitcoin, but at this moment they still do not have policies to protect my account chargebacks. Payza is another method I was thinking of implementing as a sole payment, but for some users its not a simple and easy way for signup, and Payza already has a method of purchasing bitcoin through them.