Sell them cheap, at cost if you have to. I'd love to see a P5Q-Pro for $50, and it can't really cost ASUS any more than that to make it. Making your money back on something is better than having it sit in the warahouse never to sell.
People just aren't buying computer parts or new computers right now. It is hard to get most people to even think about putting out more than $50 on something that isn't necessary.
Rig1: System Specs.
Rig2: A8-5600K@4.4GHz / AsRock FM2A75 Pro4 / 8GB Corsair DDR3-1600 9-9-9-24 / HD7560D / Samsung DVD-Burner / 1.5TB WD Green + 3x3TB WD RED in RAID5
Rig3: Athlon X2 4200+ / M4A79 Deluxe / 4GB G.Skill Pi DDR2-800 4-4-4-12 / GT430 / Sony DVD-Burner / 500GB WD
Rig4: Phenom II x6 1605T @ 3.6GHz / Asus M5A99X Evo / 8GB PNY DDR3-1600 9-9-9 / GTX470 & GTX470 / Samsung DVD-Burner / 1.5TB Seagate