You can use fiverr to get many things done for $5. I know for sure you can find someone to do a decent e-book cover there. You should also be able to find someone to proof-read your book.
Just go to fiverr.com and use the search bar. Type in what you want to have done then search through the results that come up.
If you need the sales page design, order buttons, etc in addition to the ecover check out Semmy at http://www.myminisitegraphic.com He's done great work for me!
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