I have been keeping an eye out for these E wagons recently just to get a feel for the pricing. Our lease is not up until November but it’s good to follow the market. The best deals are on the 2019 loaners as I believe MB still is offering lease support on these. California dealers seem to be offering the best discounts, but there are also a few in the Midwest and East that are around 20% discount from MSRP. That one the OP quoted has to be one of the highest MSRP E wagons I’ve seen at $82K. Most of the units I have seen in stock are in the upper 60s or low to mid 70s. If you have to have a brand new 2020, you’re going to pay the price. Nice car in my opinion, as I do not favor SUV’s.
Shop a major New England dealer. You’ll get around 15-17% off, if not more. Wagons lease out horrible due to money factor and residual- not much supply / demand for wagons. But that’s a way too high payment. New England is a blood bath for cars right now.