very happy 5D mk II user here
I love it also but the cost of the accessories are extreme. Battery
price is not that bad but the battery holder is twice as much as the
40D holder. And Canon wonders why business is down. It seems that
these guys live in their own bubble. They really don't seem to care
about the recession or their regular customers.
Actually, we should be happy that the prices have remained constant. Nikon is actually raising the price of many of their DSLRs in February.