you could always just buy physical goods, like usb miners, and sell them on ebay.
bitmit is also a good way to "get rid of your coins" while still getting things you may need.
the ebay route seems the best though, you could buy miners at .99btc a piece and sell them for $105 (minus the %13 ebay/paypal takes) and still be higher than your "15% off" rate you are offering.