The longer it stays on your vacation, the more you save by making use of the offer. (bauer-car-rental-germany.com)
The main use of this offer letter is to clarify certain terms and conditions about the job and the person will only get the job confirmation once the conditions are met. (template.net)
You may need to switch banks to make use of these offers but it can be worth it in the long run. (simplethriftyliving.com)