This is not true. Amazon will change their price throughout the day on some items, but pricing is not customized to the buyer. Perhaps you were looking at diffe

This is not true. Amazon will change their price throughout the day on some items, but pricing is not customized to the buyer. Perhaps you were looking at different times, or from different sellers, or one was a prime account (which changes shipping prices and can change which seller wins the buy box), etc. I've looked into several claims of Amazon doing this and none turned out to be true.