What's funny is when you look on Bring a Trailer and do a search for Mercedes SLK32, the same car different body but their prices are also all over the place. I see Crossfires posted for low prices, high prices, and reasonable prices. In the end, it will depend on the buyer and what they are looking for. If you look at the scatter chart for pricing on Bring a Trailer one can see prices are all over the place.

Bring a Trailer: https://bringatrailer.com/search/?s=SLK32