Try checking the prices in Switzerland. It's cheaper than in Europe. The 5DMKIII is about 2400-2500€ and the 6D is 1500-1600€.
Europe is quite expensive when it comes to electronic devices, we are quite lucky in Switzerland as we have fairly "better" pricing, somewhat closer to USA's pricing.
Otherwise, as said Neuro, you might want to check your options. Complaining on a forum about pricing surely won't change much… If you don't have much glass, why not switching to Nikon? If you do have a lot of glass and only want a backup body, why not looking at used bodies on ebay? 2nd hand 5DMKIIs can be found quite cheap on the web.
Or why not wait for the prices to come down a bit? The 5DMKIII has been around for less than a year and its price has already dropped! I bought my 5DMKIII about 3-4months ago for almost 300€ more than what it can be found now.