There used to be a good second hand record shop in Elm Row but I haven't been there for a while. Perhaps a resident would have a better idea. Also the OXfam shop on the Bridges, near Causewayside, sometimes has a very good selection; but of course it depends on what comes in. Trouble there is that sometimes they are very expensive. I was keen to get a copy of Leviathan by AL Lloyd a couple of years ago - I won't tell you how much they were charging since this is a family site!