Upload & Sell: Off
It won't be long and we will only see second hand 5dmkII's anymore. It's 6D EOSfun from now on. A 6D2 is not on the way. Anyway 6D EOSfun is affordable full frame already and it will be cheaper this year. Since today the MSRP price in the Netherlands is already in the 1800's euro and I expect it to go to go into the 1500 euro direction after the first series have been delivered. Canon has a huge production capacity for this model and it is definitely going to play the lower price card to pump up the volumes.
I imagine the same. Nikons D 600 went down about 25% within tree month after sales started here in germany (Amazon). I do not see any cause, why something comparable should not happen with 6D.