You're entitled to ask the price you want, but you should take into consideration that Radeon R9 280X can be has for as low as $192.75 shipped (from ebay), which is also a faster card that is also a generation newer than the 7950's you are selling. You should probably adjust your price to something more reasonable.
Thanks for the heads up. I only did a quick search the other day and saw them all over the place from 180-270.
I am definitely open to offers!