If you are willing to pay that for a 570 why not just pick up the 480 that's on sale for 250 at NCIX. That way you get a new card with warranty that's just as fast with more memory.
EVGA GeForce GTX 480 700MHZ 1536MB GDDR5 2xDVI Mini-HDMI PCI-E Video Card - eVGA - 015-P3-1480-KR