Have been looking for the cheapest reference 570. This seems to be it
http://www.buy.com/prod/galaxy-57nkh3hs4gxk-geforce-gtx-570-graphics-card-732-mhz-core-1-50-gb/q/loc/101/219607963.html
$281.99 after rebate
Use this offer to take another $10 off (just register a new email)
http://www.fatwallet.com/Buy-coupons/offer-490267/
http://www.buy.com/prod/galaxy-57nkh3hs4gxk-geforce-gtx-570-graphics-card-732-mhz-core-1-50-gb/q/loc/101/219607963.html
$281.99 after rebate
Use this offer to take another $10 off (just register a new email)
http://www.fatwallet.com/Buy-coupons/offer-490267/