Missouri Laws > § 407.643 Missouri Laws 407.643 – Waiver of buyer’s rights void Current as of: 2023 | Check for updates | Other versions 1. A credit services organization may not attempt to cause a buyer to waive a right under sections 407.635 to 407.644. 2. A waiver by a buyer of any part of sections 407.635 to 407.644 is void. Previous sectionNext section Chapter 407 Contents