Did your poll, and since I am in the US, geo restrictions aren't a issue for me.
However, price is. I rarely buy anything over $4.99........unless its an author really special to me, or the continuation of a series I am reading. Stephen Kings latest was the last one I bought above that price, and thanks to Amazon's price war, got it for $7.
Even then........I can usually always get best sellers as an ebook thru my local library. The wait, if any, is no big deal when you figure you get to read it for free. It closes after the loan period, so there are no late fees.
If I pay for a book, I feel I have rights to it, so formats and drm are not a problem. Convert and liberate. Problem solved.
Poor formatting and spelling are no an issue either........at least not one big enough for me to worry about. I generally can 'lose' myself in a book long enough to ignore the problems. Its the story that captures me, and everything else just 'goes away'.
Yes, I know I am in the minority here.......spelling and editing should be top notch.......especially considering the prices being charged for best sellers. But hey...........I just want to read, and will do so any way I can.
edit: You asked about "self published" There are many jewels out there that I would never have considered had I not joined MobileRead. As it is, I feel my reading experience has been enriched by trying new authors.