Yes,
If it's good enough to be released, I'd be happy to pay for an unfinished product - if for no other reason than it would make it more sustainable long term.
Or, I'll wait until they figure out what the heck their long term pricing will be before doing the work to change a critical part of the business to run on them.
This "free to use" mindset is incredibly short-sited - especially when it comes to checkout infrastructure. That should be the one thing that people are willing to spend money on.