Indeed it is ! Some of the prices are pretty ballistic though (e.g. £50 for a Freddie Hubbard Pablo 2LP and £150 for Bill LeSage's 'Directions in Jazz').
Last time I was in there that rack had Bill Oddie's old mono/NY USA copy of a Dexter Gordon Blue Note (I know as it was monogrammed by Mr. O himself on the back) but inspection of this £50 'find' showed that it was pretty well beat up.
I was gratified to find that some of the "hens' teeth" had been sitting in my collection since the sixties - and in good condition, too! (Not for sale, incidentally )