Supplier RelationShip Managment Epicor 9 - Multiple prices in one da

We have am outsource supplier who quotes us for a part called CNC Machining. He may quote us for a small and big job in the same day.
When records are added to the Vendpart table they have an effective date which causes problems since you cannot have a different price in the same day and the quantity is always one. Any sugesstions would be appreciated.