I just should point out that it was a different project that was cancelled. Natami was not re-started.
I checked out some videos of OS4 and MorphOS. Both are okay, but not worth the price yet.
MorphOS is very much worth the price.
I registered MorphOS v3.1 for 100 quid and then received FIVE major updates free of charge to bring me up to v3.6 currently.
I will continue to receive free updates to major versions of the 3.x series.
What other OS give you that much?
Buy Windows XP and then updates to Vista, then to Win7, Win8, Win 8.1. how much would that cost you?
Plus MorphOS is free to use for unlimted amount of time for those who are too tight fisted to pay for it, you just have to reboot every 30 minutes.
As for OS4, then I agree with you that the costs is too much. I run it on a Pegasos II but your only option if you don't want second hand hardware seems to be the $3000 X1000 or various models of low performing SAM mobos.
Project Moana should have been a proper release from Hyperion years ago.