2017 GLE 350 - worksheet attached - am I getting a good deal?

Pricing is complicated (IMHO). Dealer is assuring me I am getting a good deal - would appreciate independent feedback/ opinions from the crowd here.
Below is a worksheet, the car has been ordered and should be delivered some time in December. Any thoughts?

Below is a worksheet, the car has been ordered and should be delivered some time in December. Any thoughts?

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If you think the $6800 discount is fair, then nothing else is marked up.
Nice clean deal, with only first payment due at signing.
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TMV for your area is about $4,500 under MSRP. So your $6,800 discount seems better than average.