If you are legit put it on ebay or craigslist. No one in their right mind here is going to:
1) Pay $190 for a mid range graphics card that was worth that 3 years ago.
or
2) Send money to someone who joined a forum like this with no buyer protection to sell something.
For anyone who might not know better don't buy anything here unless you know and trust the seller. And you can get this card on ebay for $100 complete with buyer and seller protection.