NewEgg has the SAPPHIRE 100251SR Radeon HD 4870 X2 2GB 512-bit (256-bit x 2) GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card for $449 with a $50 MIR and free shipping. Use coupon code VGA11330 to knock another $30 off the price.
Specs:
- Chipset Manufacturer: ATI
- GPU: Radeon HD 4870 X2
- Stream Processors: 1600 (800 x 2) Stream Processing Units
- Memory Size: 2GB
- Memory Interface: 512-bit (256-bit x 2)
- Memory Type: GDDR5
- RAMDAC: 400 MHz
- Max Resolution: 2560 x 1600
- HDMI: 1 via Adapter
- DVI: 2
- TV-Out: HDTV / S-Video Out
Link $50 MIR
SAPPHIRE 100251SR Radeon HD 4870 X2 2GB 512-bit GDDR5 Video Card $370 AR + FS 
