[IanCal]

I think that's fair, I just also think that the price to me feels about the same ($5/year or $5 for some unknown number of years), and would give you some ongoing money rather than a block at once then regular maintenance, while at the same time limiting the runway you'd need to give people while still fully providing them with the service they paid for / you could always refund the last year and it wouldn't wipe out everything.