The actual hard part when switching from something like this is migrating user accounts (users will be forced to reset their passwords, which is lame), order hi

The actual hard part when switching from something like this is migrating user accounts (users will be forced to reset their passwords, which is lame), order history, and active subscriptions so that you can seamlessly continue billing your paying users. And at 10%, you're definitely going to want to migrate at some point if you succeed, so keep this in mind.