So far I like the MAS, but it's going to need trial versions or demos to sell big ticket items. I'm kinda dealing with this now via the iPhone App Store. I bought a $40 GPS app and had really no way to know whether it would be any good. It seems good aside from some hardware issues, but I can actually return the hardware. The software? Nope. Same deal with the MAS. I downloaded Pages with no problem because I had used a trial version. I bought Angry Birds because I have played it on my iPhone and it was freakin' 99 cents. Now I see that Call of Duty 4 is on there for $50. There is NO WAY I would spend $50 without some return policy. I won't buy that game because I have an Xbox, but the same theory applies to something like Apple Remote Desktop or Aperture. Anybody else with me? I've wasted way too much money on iPhone apps I didn't use past a week to start doing the same on my Mac. It's no big deal with things like iWork and iLife, but when developers start coming up with new apps that we haven't seen before, who is going to drop tons of dough on something they can't try first?