As a reader of SF&F, visiting used bookstores has become a sub-hobby for me. I have visited a large number of used bookstores on the East Coast, wherever I travel. Harbar Book Exchange is one of the best. It has a large selection of fairly recent SF&F books, mostly paperbacks. They are well organized in a pleasant storefront. Harbar Books is one of the highlights of my annual winter trip to the Orlando area.