Oh, and just to be clear, since I've read on a french MorphOS forum that someone isn't willing to pre-pay: I don't require pre-payment at all. The only thing 'pre-paid' would be the hardware and MOS itself.

For AROS, they have a list of people who are willing to purchase AE4 for AROS with the number of licenses they want to buy (if more than one). That's somewhat stronger than anonymous votes without having to resort to advance payments (which I wouldn't like myself!).