seems like you've kept it in fairly good shape, but I'd say that it's probably not worth much considering you can get a new, lightweight, 39" 1080p LCD for anywhere between $250-$350 these days. Unless someone who collects old Sharp Aquos models in interested in it, I'd say you can probably expect $100-$150 for it. I wouldn't bother with the expense and hassle of shipping it.
ht Panasonic 60" ZT60, Monitor Audio: Silver RX6, RX Centre, Radius 90HD; Martinlogan Dynamo 700, Marantz SR5006, PS3, Oppo BDP-103D
2ch Sony KDL-32W650A, Sony BDP-S1000ES, Marantz PM8004, JVC T-X3 tuner, Monitor Audio Silver RX1, REL T3, Apple TV, Peachtree Audio DAC•iT, Sennheiser HD598
lr Panasonic 50" ST60, Sony BDP-S5100, Apple TV
pc Energy CB-5, Audioengine D1, FiiO A1