(i) Pricing. Independent pricing of items in an agreement is necessary for the agreement to be severed into two or more contracts. In the case of an agreement for similar items, if the price to be paid for the items is determined under different terms or formulas (e.g., if some items are priced under a cost-plus incentive fee arrangement and later items are to be priced under a fixed-price arrangement), then the difference in the pricing terms or formulas indicates that the items are independently priced. Similarly, interdependent pricing of items in separate agreements is necessary for two or more agreements to be aggregated into one contract. A single price negotiation for similar items ordered under one or more agreements indicates that the items are interdependently priced.