Can I sell a Product or range of Products at a set price? For a set time limit?
Under each Product Code there is an option for Promo Pricing. A price can be entered along with the dates that this applies from and to as a dollar value only.
For bulk imports of Promo Pricing this can be entered using an import routine.
As long as the Pricing Rules are followed that Customer will receive the item at the Promo Price.