You travel a lot , book flight tickets, fancy hotels, cool concerts and so on. After each of these events you receive lots of vouchers with good deals. You do not have to delete these offers anymore from your mailbox, rather you could post them on plandiscounts marketplace in order to sell with a predetrmined price, or on a bid.
https://twitter.com/PlanDiscounts/status/1223940149538627584?s=20
