Good product information but no prices listed. Includes a vintage trading list. A major catalog retailer of computers and accessories. Sound cards and other gear can be purchased directly on the Web. This is a banner site for their stores in New England and New York, but they include a large catalog of used music gear.
Prices are a bit higher than some, but good selection.
Orders are taken by telephone or e-mail. Doctor Audio Los Angeles store with online catalog of MIDI hard disk and recording software for computers. Eighth Street Music Philadelphia-based music store. Includes secure online ordering system. A good selection of MIDI and pro audio gear.