Auction data for 2016 E400 CPO

I found a 2016, <10k miles, P2, sport package, CPO. Negotiation currently sits at $49.5k. From what I can gather from other postings, 2016 E class sedans with <10k miles seems to sell at auction for about $42-43k, but I'm not sure if I can apply that same number to the coupes.
Does anyone have access to auction data for 2016 e400 coupes with <10k miles? Does the auction data allow you to filter by option info too?
Alternatively, any thoughts if this is a good deal at $49.5k? Im thinking its high by about $2k. I assume the sedan high avg auction price of $43k is applicable to a coupe (big assumption), add $1.5k for CPO warranty, add ~$1.5k for CPO refurb., and add another $1-1.5k for dealer profit gets me to fair market value of about $47.5.
Interested in your thoughts. Appreciate any guidance or feedback!


