I think it's about as much about the product as the marketer behind it sometimes.
Personally, I believe that if you were the likes of Frank Kern, you could charge whatever you wanted for an information product and people would still buy it regardless because they are buying into the marketer more than anything in this example. Frank Kern's been there, he's done it and practically wrote the book so when he releases something people jump on it and so price usually doesn't factor into that kinda thing to those that can afford it.
However, price can play a part if you're looking a new marketer that's popped up. He or She might be selling the best thing since sliced bread and it could be amazing and only retailling at $297 or something like that but would you invest into the idea they were selling if you yourself couldn't invest the trust into the marketer behind it?
I don't think so...
Now, if that product was $17 it's a different story but you get where i'm coming from