count me in, but I didn't answer poll because it depends on too many things:
-If it's possible to copy images btw n900 and neo900 via backupmenu (or something equivalently easy) then I'd pay significantly more. Because I want to always have a backup device, so if I can't use n900 as one then I'd need TWO devices. Realistically I'd pay up to 400€ for one or 600€ for two.
-I'd pay more for certain bonus features, if there are any. Top of my list, full size USB port on device would def be worth 100€ extra to me. External ant connectors for wifi/gsm would be worth something extra too, as would more onboard storage and/or a second micro sd slot. (or better yet full size SD slot)

Great idea and super thumbs up for this