Amazon only comingles inventory among FBA sellers, and gives each an option to opt-out from it if they want to. They never comingle 'sold by amazon.com' items.

Amazon only comingles inventory among FBA sellers, and gives each an option to opt-out from it if they want to. They never comingle 'sold by amazon.com' items. In cases where I've bought amazon.com items and not from FBA sellers I never received bad products, and I've easily bought dozens of SD cards, flash drives, SSDs, etc.