Is there no longer a fee-based price rating for private individuals?

Good morning, since I’m dealing with a used car purchase, I actually wanted to use a paid service (sweak, for example) to get a meaningful price rating. I had to find out then unfortunately that there is no such thing apparently for private individuals anymore. Since whole business models seem to have been changed. There is of course a superficial, free price information, but that is quite general. I had on a somewhat de I’m just too stupid to be able to find something else, or is there simply no longer such a thing? Best regards