That gramatical error was particularly grating. As for the price umbrella created by introducing the $250 product first, I'm unsure. When dealing with very large sums, it's difficult to make one value appear comparatively "trivial." $70 is certainly less money, but it still, unequivocally, a lot of money for a book.

I also contend this umbrella phenomenon because, with such a high starting price, it's likely to just alienate people. I saw that first price, assumed that it could only get higher, and nearly closed the page. Linear introduction of information can afford the seller ways to manipulate the customer, but it can backfire on them as well...