Alternate payment methods

Yes, the difficulty of implementing it has been the thing holding us back. I looked into what it would take for us to accept Monero after the last time cryptocurrency came up in the comments, and, unfortunately, it would require either setting up a whole new backend service and integrating it into our credit-card-handling hooks or evaluating and choosing one of the many (variously trustworthy) companies that promise to handle it for you.

It definitely can be done, we just haven't gotten to it yet. With several people expressing their desire to subscribe with cryptocurrency in these comments, maybe we should move the priority up the list.