Certified cost or pricing data is required above $2M, but there are exceptions that does not make it mandatory for many acquisitions. The exceptions are when there is adequate competition, if the requirement is commercial, if the prices are set by law or regulation, or if a waiver has been granted.. The below link has a short video that explains this concept. FAR convention 1.108(c) applies to the dollar value question: Dollar thresholds. Unless otherwise specified, a specific dollar threshold for the purpose of applicability is the final anticipated dollar value of the action, including the dollar value of all options. If the action establishes a maximum quantity of supplies or services to be acquired or establishes a ceiling price or establishes the final price to be based on future events, the final anticipated dollar value must be the highest final priced alternative to the Government, including the dollar value of all options.

https://media.dau.edu/media/t/1_g0tm8iv9