I'm in the same boat. I had an offer from them today (in a very professional-looking contract) to publish my book for £2,300. Great. I agree with various comments in this thread - if they'd been up-front about the fact that they charge to publish, I wouldn't have wasted my time or theirs.

I do love the fact that they agree to give me ten hardback copies for free. I make that £230 per book...