For me it boils down to the person your are engaing with for the sale of the item, i tried to buy bike for my little one the hub, contacted the seller 1 minute after she posted the add , she said all good i did not neg to lower the selling price, told her i am on my way to stellies to come and collect, only to get a whats app driving into stellies saying sorry bike is sold... Yes i got be*&^k , she did not answer my phone calls etc etc. But left it there, got a coffee in stellies and drove home. The other sale time , i bought a epic entry ( they go like hot cakes), told him give me the weekend to get my cash together, by Monday he has honoured his word and kept it for me ( while fighting of the wolves), and we concluded the deal. So for me it is the same as bussiness dealings it is the person you are dealing with and not the company and or platform. Just my 2cents.