Well, at the very least, the file size limit is significantly higher (Let's Golf 3D is something like 220 MB, way more than the old 40 MB limit) and I'm assuming some form of demo service is getting ready to launch. I would hope so anyways...I'm more likely to buy a game if I can try it first.
Okay, but let's say you're going about the legal way of purchasing an music video from iTunes. A 2D music video on iTunes costs $1.99 plus tax. These 3D shorts (which are longer than most music videos) are $1.99 plus tax. Sounds fair to me if that's your thing.