Small useful post:
Right now B&N’s NOOK and Amazon’s KINDLE are both discounting Neverwhere. It’s at $2.99 — these discounts do not last for very long (normally 24-48 hours) so if you want an e-copy, grab it quickly.
It only applies to the US site.
When this happened with American Gods, iBook also dropped the price. I haven’t checked…
(Edit to add, I checked. They did too. http://itunes.apple.com/us/book/neverwhere/id363686338?mt=11)
I'd write for longer, as I have tales to tell, or even to cut and paste, but guilt will eat me if I do not drive to a coffee shop and either type or scrawl.