Pricewatch shows 2 entries for the Asus (I know, I know) A8N-SLI Deluxe for ~ $300. Has 2*16x, 2*1x PCI-E, 3xPCI. nForce4 SLI chipset. 4 Dimm slots, 4GB Ram max, GbE, 4+4 SATA, onboard audio.
The only other board I know of is the Abit AX8-3rd Eye which I don't see anywhere.