I think a lot of these sites are silly doing the same thing over and over and clearly there's already a king if you just want to do the same thing.
You are 100% correct the way people search has changed, peoples demands are higher and they're a lot tighter with their money.
So I suppose we should look at this another way, ego and salesmanship aside how much does it cost on average to sell a car? Does it work on a percentage so higher value cars cost more to sell ?