I regard a good deal when one can resell their purchase and make money or lose very little.

I’m not talking about consumables like food, fuel, electricity. Everyone has to spend too much on these because of inflation.

Ten years ago my son, who was 14 at the time convinced my wife he had to have a very expensive pair of basketball shoes. I think they were around $300. Within a week he sold them for $2500. He knew the market well enough before he purchased them that he would make a profit.