There are lots of ebooks I'd like to buy for example the whole series of Wizard's First Rule by Terry Goodkind as I have all these in hardback format. I can buy the first book in the series from Amazon but not the rest!?!
On the positive side, I am discovering a whole lot of new books and authors that I'd never read before (Dickens, Dumas, Wells) and also a lot of childhood favourites - Little Women, What Katy Did, Black Beauty, Heidi which are all free

And my daughter enjoys being read to as well - so 2 happy campers.
In an ideal world it would be great to get everything you want but I guess in this instance I'll just try and make the best of what is available - and let's face it, I'm never going to read all the ebooks on mobileread, nevermind anywhere else.