Relevant KDP Select terms clauses: "1. Exclusivity. ...you give us the exclusive right to sell and distribute your Digital Book in digital format while your bo

Relevant KDP Select terms clauses: "1. Exclusivity. ...you give us the exclusive right to sell and distribute your Digital Book in digital format while your book is in KDP Select. During this period of exclusivity, you cannot sell or distribute, or give anyone else the right to sell or distribute, your Digital Book..." That's not a warranty that no 3rd party will distribute it contrary to your rights, however, so there's no breach if someone else distributes without your permission. However, it doesn't matter since: "3. Period of Participation... We can end KDP Select at any time at our discretion..."