Interesting post about book selling, Rimbaud!
I have to say, thank goodness for t'Internet when it comes to finding books. Several years ago, book prices were effectively 'fixed' in the UK. Then the government, in it's infinite wisdom

, suddenly released retailers from the requirement to sell books at their Recommended Retail price (RRP). At the time, commentators said that market forces would inevitably mean that the big selling titles would get much cheaper, and the more obscure titles would see price rises. This has indeed proved to be the case.
And in addition, chain bookshops do not seem to carry the range of titles that they used to. These chains have also proliferated, which is good if you are after something readily available, but if not, you are put in a bind. There are less independent booksellers these days, thus book buying online has become the only option for less profitable titles. I lke the fact I can get the latest Harry Potter in the supermarket for a knockdown price, but it's a bit annoying that in my whole city (a 500,000 poulation, including 50k students!) I have as yet been unable to find a shop to spend time in browsing Tolkien critical works.
Let me drop in some praise here for two independent shops - The Whitby Bookshop and Broadhurst's of Southport. I've got no commercial interest, just they are fantastic shops.