I received a bunch of Scuba equipment as a gift, but never used them. I've got:

ScubaPro G250V + R295 Dual Regulators: $250 (retails for $450)
Suunto Gekko Diving Watch: $75 (retails for $150)
Suunto Dive Compass: $75 (retails for $150)
Atomic Aquatics Split-Fin Diving Fins: $100 (retails for $200)
DeepSea Dive Boots (size 10): $10 (retails for $30)
Henderson Dive Gloves (L): $10 (retails for $30)
XS Scuba Dive Knife: $10 (retails for $40)
Carrying Dive Bag: $10 (retails for $25)
Accessories (signal flotation, save-a-dive kit, water-proof writing pad): $10 (retails for $30)

I will except purchases on individual items, but I will give $50 off if you take everything, bringing the total to $500.