Sidecar is trying the different model AFAIK. I'm myself very doubtful that it would work well in practice - as a consumer I don't want to haggle the price in th

Sidecar is trying the different model AFAIK. I'm myself very doubtful that it would work well in practice - as a consumer I don't want to haggle the price in the ordering process, I just want hassle-free ordering experience with the constant price level.