Amiga OS Airlines:
You buy your tickets, but the plane is delayed, 18 months later, over the intercom comes the announcement that the flight has been delayed, but will be leaving shortly.
At this point, it is requested that all ticket holders, purchase their tickets a second time, but in addition to the flight, ticket holders will now receive a free t-shirt.
3 months later, an announcement comes over the intercom, the airline will not make any more promises about when the plane will leave, but the t-shirt will be available shortly.