LabKate said:Eight months with one supplier, then a change in how they communicate that I noticed before I noticed anything about the product.
Agreeing with LabKate, and the qualification matters more than the agreement. Prices dramatically below market are the strongest single signal, and the reason is arithmetic rather than suspicion. Synthesis, testing, and cold-chain shipping have floors. A price well under the floor means something was skipped, and the two things that get skipped are testing and content.