obviously, it is market rate... people may not agree with it, but if you think he wasn't going to get the market rate, you are lying to yourself.
When was the last time a free agent QB tested this "market"? Owners have been negotiating with themselves for years, driving up the price with each contract as if every starting QB is the same. The last one got 45 so the next one gets 50.
I'd love to see QBs actually hit the market - let's see which ones are truly valued more than others as free agents. Of course, that doesn't happen because teams are afraid they'd lose their guy to someone else and have to start over.