I agree with HarryT. All of the examples are due to poor standards, lack of adequate proofing and corrections.
I don't think it's a case of ebooks not reaching maturity yet as much as publishers not reaching maturity yet in how to handle ebooks and create them as meticulously as they should be created.
Edit: I enjoy a nice-looking cover, even if it's in black and white because I set the cover image as my standby screen on my reader, which I really like to see when I pick up my reader. Those images can be compressed nicely though without showing any quality loss as long as the publisher gets someone to do it who knows what they're doing and doesn't either include a huge image that's 300KB in size and is a waste of space, or a badly pixelated image that looks horrid.
Last edited by Ripplinger; 02-01-2013 at 05:09 PM.