The price updates within a day, and you get sales reports daily with a delay of a few hours, and a mix of old and new price sales on the first day. So it's poss

The price updates within a day, and you get sales reports daily with a delay of a few hours, and a mix of old and new price sales on the first day. So it's possible, but the feedback loop of the charts means that this kind of measurement is hard to analyze. If you do a test that fares poorly, the next test will probably be affected by that.