2018 Mercedes-Benz E63AMG S

The core issue is valuation disconnect. Comparable vehicles in the market are median-priced at $42,000, while the wholesale/book value sits at $50,000. You're being asked to pay roughly 3.5 times the market rate for this car. Even accounting for the relatively low mileage (29,000 miles), this premium is indefensible. The depreciation math is brutal: this vehicle has already shed 58% of its original value and is unlikely to recover any of that loss.

The market itself is sending a clear signal. The strong-sell indicator (-0.5 score) reflects that comparable E63 AMG S models are moving downward in price, not holding value. You'd be buying into a depreciating asset at peak asking price.

The secondary concern is ownership cost. Annual maintenance runs $3,500—roughly three times what you'd spend on a standard luxury sedan. Over five years, that's an additional $17,500 in service costs on top of an already-inflated purchase price.

There's also limited dealer transparency. The seller's identity and reputation aren't available, which means you can't verify their track record or pricing justification.

Before proceeding further, contact the seller directly and ask for their pricing rationale. Understand why they believe this car commands a 3.5x premium over market comparables. Their answer will tell you whether there's a negotiation path forward or whether you should walk.