As usual in these discussions, I come from a slightly different angle. Books in Australia are outrageously expensive in general, so ebooks when bought elsewhere (eg. Smashwords and Amazon) are ridiculously cheap to me.
But even so I'm starting to find that I, like many people here from the U.S. and other countries that enjoy better prices, am starting to put lower limits on what I find acceptable and what I find a bit harder to swallow.
The first reason for this is that getting into ebooks has exposed me to a huge range of independent fiction out there that now competes for my time against traditionally published authors. Generally, independent authors charge less than $5 a book - sometimes considerably less. So now perhaps I'm in a position of choosing between Stephen King -
Full Dark, No Stars at $14.81 and David Michael -
The Door to the Sky at $2.99.
The second reason is that I'm finding on the whole that moving into the ebook market has resulted in me buying much more than I have previously - and reading much more than I have previously. Even at reduced pricing $14.81 per book is going to start hurting if I go through 2-3 books per week. Before it was maybe 1 a week at most. Additionally, I previously would read books that were loaned to me by family members which incurred no cost at all.
That said, I would have bought
The Wise Man's Fear by Patrick Rothfuss at any price once it came out.
So basically, it can depend on the price...except when it doesn't. Nice and clear.
Regards
Caleb