It’s common to have set prices for goods and services. Whether someone buys today or next week, the price stays the same,
Things change when products or services have an expiration date. If you can’t sell the goods or service before the expiration date, it’s a complete loss. Anything you can earn prior to the expiration can be looked at as a bonus.
A hotel room that goes unused cannot be recaptured
Food that is beyond it’s expiration date should be thrown out,
Airline tickets that go unused are lost forever.
If you have goods or services which expire, know what you can sell them for to recover at least some of the potential revenue.
Have a great day!