They're overpriced for what they offer. I wouldn't recommend them to anyone except a complete technophobe who would rather pay than learn anything computer related.
For everyone else, learn how to create a clean manuscript in your word processor and then upload it to the stores yourself.
Or use draft2digital which will upload everywhere except Amazon for you with no up-front fees, no change fees, and only 10% royalty fee for their service. Much cheaper than ebookit.