I still cannot justify paying $25-30 for a blu-ray movie when the difference is so minimal on the PS3.
You need to shop around. I recently bought a nice blu-ray movie for $10. I see several on sale for $15-$20. As far as I'm concerned unless you're getting a massive special edition multi-disk (as in more than two) set you shouldn't buy a Blu-Ray movie for more than $20. Even then I hesitate when there are deals to be found.