Potential deal - 2025 MB GLC 350e

I’m getting the following deal on a dealer courtesy car. Checking to see if it’s worthwhile.

2025 GLC 350e
Exec Trim
19" wheels
Driver Assistance Pkg
Pano sunroof
and a few other minor options

Monthly payment $678 with TTL DAS ($5203)
Adjusted Cap Cost $50,845
Residual 55%

Thoughts? To sign or not to sign.
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24 months has 10% higher RV.

I’m a noob - could you explain what that means, please?
Also - the price on the car was $68.9K and the lease is for 36 months/12K miles.

Thank you.

Ask for a quote for 24/12k. Should be around $90/mo less