The car websites will also clean/inspect the cars and ship the car to your house which is nice if the car you want is not near where you live
But yes generally my experience with https://clutch.ca was they push you to some expensive financing deal through their people.
Do they really though?
I asked a used car salesman once, "what do you do to these cars after you get them" and he said "nothing." They get them from the auction and put them on the lot.
Now maybe some dealers do a little more. I am a bottom-feeder when it comes to cars. But stands to reason that any money they spend on the car is less profit for them when they sell it.