Would be great to offer paid downloads of digital products (a la Gumroad, etc). Payment gateway is already there, membership, email acquisition, etc, so it could extend what’s already been developed and provide Ghost publishers another revenue stream / membership opportunity.
yes, one-time-payment for a specific tier / product would be very useful as it would simplify the number of softwares I have to use.
As a workaroud there is the possibility to use Acta as described on lsww.de (German tutorial behind a paywall of 6€)