As for the quiet shop in a backstreet as opposed to a Mall, I think it depends on what you sell. I know of a specialist comics shop in a small lane off of a small mall in Adelaide that is a hive of activity. Comic collectors seem to gather there to meet and discuss their hobby, check out the stores items and basically hang out with like minded people. Its a great little place and although my only interest in comics is to sell a few if I find some treasures at a garage sale , I love the vibe of the place. If you sell specialised items buyers will have a tendancy to seek you out. If you sell generic items you have to fight hundreds of other sellers on price and visibility.