PayPal is an example of an online payment gateway, while Square is a provider of point-of-sale terminals for brick-and-mortar retailers. The line between the two is blurring; PayPal just purchased iZettle (for $2.2B) to compete more directly with Square for brick-and-mortar market share. ...
One well-known example is the Girl Scouts. Proceeds from annual cookie sales go to local Girl Scout councils; one in North Carolina gets up to 70 percent of its yearly operating budget from fall cookie revenues. Taking your merchandise sales online can expose you to a much broader audience ...