My dad was a rare book dealer back in the 70's and early 80's (he sold detective fiction) so as a kid I spent a lot of time there - and with the Capes family who ran the place.
Sorry to see it go. Very fond memories. Sad too, as it was a very real, physical link to my Dad who died in '84. There's not a lot left now!
Last time we were back in Britain (a few years ago), I took my daughter there (she was a toddler at the time) on a kind of pilgrimage/ connection with the past. Glad I got the chance.