Well 108$ is about 79Euro and MorphOS is only cheaper on seriously crippled HW (Efika + Pegasos1).
But you do have a point:
- 30 mins/boot is more than enough to check wether certain apps exist and work
- 30 mins/boot is more than enough to check wether one can get the hang on how to use MorphOS
- 30 mins/boot is more than enough to check wether often visited websites work with OWB
etc etc etc
Also with a 30 day trial there would for sure be clever people finding a way to reset that counter (as it would have to be stored on disk).
If after that you still can't decide wether MorphOS is worth the equivalent of redrumloa-2-nights-out, MorphOS and yourself simple aren't made for another.