My idea of bartering is swapping one goods or service for another persons goods or service. For example, say I want your cow but can not pay you. I offer to make you a quilt for your cow, you agree. That is what I think of when I think of bartering. The trade is agreed upon IN ADVANCE and carried out. But not always at the same time. Like I will make you a quilt for Christmas if you rototill my garden this spring.