There are a couple of slides and videos on The Guardian about the state of Charing Cross road in London, the street for booksellers and book buyers. With the move of Murder One the state of the street is up for debate.
I have always thought that if anything was going to turn the screw on the existing second hand specialists apart from the obvious rent rises it would be the internet.
The days of browsing in a bookshop on a weekend or lunch hour are becoming increasingly rare sadly and now that shelf surfing is done online. Add to that the fact most of these booksellers are using things like Abe Books themselves and it explains why Murder One is going to try and crank up its business virtually.