Coupon codes are used to change the price of the items in a customer's basket when they are ordering online.
These can be used to change the price in the following ways:
- to sell a room at a fixed price ( e.g. single rooms at €45 )
- to sell a room at a % discount off the advertised price ( e.g. 5% discount )
- to sell a room with a fixed amount off the advertised price ( e.g. €10 off )
Examples of coupon codes are 'apriloffer', 'acme_limited'