My Mac ported Tron 2.0 was $39.95. Although I would have to say that it is worth every penny I paid for it! I generally don't buy games for my computer because I have a PS2. I see my computer as my workstation and my PS2 as... well... my game console. Tron 2.0 is the third game I've ever purchased for my computer - the others being Alien vs. Predator and Alien vs. Predator 2. Being a huge ALIEN and Tron fan I couldn't pass up any of these titles, and I'm incredibly pleased with Tron 2.0. Actually, the further into the game I get the more I love it.
As far as the sales go: I don't have any figures, but MacPlay extended their discounted price of $39.95 beyond pre-ordered copies due to an overwhelming response from Mac-based gamers. ...And if a version is ported for PS2 you can bet I would get that as well (only cause I'd love to play it on a screen bigger than 21"
The game would appear to be selling well, and as has already been mentioned: game sites like GameSpot and Game Spy gave the it high marks.
...as far as bootlegging games goes: just go out and spend the dough to buy the game... It's not like your looking at a price tag like that of Maya, or Lightwave, for Chrissake! Most people with even a part-time job, or a paper route, could afford a video game.