You need book covers that sell your books! Those amateurish ones that you see on Amazon are enough to scare away potential readers and make the author look like a cheapo. If they skimp on the cover, they will probably skimp on the content…
Now you can get a massive collection of predesigned book cover templates that all you have to do is edit and forget it!
Check out some of the amazing covers:

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Creating Unique Covers For Your Kindle Book

http://wsoinsiders.com/go/kindlecovers/