SD, I think publishers are going to be pretty careful with pricing of e-books generally. I too wish the prices would be more comparable to the sorts of deals you get nowadays for downloading music - there's plenty of places cheaper than iTunes' 79 p per track - but it has taken a bit of time to get to that stage.
Also, although no print costs are involved, there are various other costs - there's still the editorial & production costs, the author royalties, marketing and so on. In addition, the store itself will potentially take a biggish cut. I hope these things will sort themselves out, but I wouldn't expect the prices to dip significantly below the print copy prices for a while yet, if that.
The thing I'd like is if it was possible to 'rip' books & turn them into electronic versions as easily as it was possible to do with CDs. Fat chance of that though! Shame - I've got loads of old books at home, at least some of which I'd be quite happy to only have in virtual versions.