Not for 25k, they are in the $28k-35k with anywhere from 40k miles and above. The body line on the CLS are sex. I would put in a little more to go with a good CLS. The only problem is it would have more miles than a similarly priced E55.
I found a 15,000 miles silver E that is clean as shit. Still haven't found a really clean/low mile CLS for a good price. Might be tough. I have time though, so I'm not worried.