I think supply and demand are driving the prices downward. As new products come on the market with better features than the existing ones, the older product prices will drop. Many people owning 20Ds that want full frame can now afford a 5D. Many 1Ds owners want to change to 5D. So both 20D and 1Ds prices will come down. I'm guessing by early next year, 1Ds prices will be in the low 2k range, 20D about 900, and 5D in the mid-high 2k range?
