I believe I said once that I'd offer him 3 yrs/$35mill. I still think that's reasonable for the guy and he won't starve on it either.
I can't say for sure what an owner will end up offering Dunn but I stand by my opinion that that if he gets anywhere near $17-20mill/yr that he's overpaid.
Playing in a World Series will likely help Burrell's worth because rightly or wrongly it looks like he helped his team to win. If the D-Backs had gone to the WS, Dunn's value would have been higher as well.