Marketing wise, I think it would be a good idea to release them separately and then release an omnibus/bundle afterwards. You'll then have four releases instead of one. From what I've read from self-published authors who've done this, the omnibus edition doesn't actually cannibalize sales of the individual stories. Both will sell and you'll maximize your visibility.
Last edited by Suzanna; 07-31-2012 at 11:46 AM.
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