In the spreadsheet where you've indicated 'Y' will be the ASINS we will reprice and where you've indicated 'N' will be the control group which we benchmark against. We also take the control group you've given us and check to see if they are similar in nature categorically to the group we're repricing. We also look at median unit velocity. If the category is different and the median unit velocity is way off, we exclude it from the control group. We want the reprice group and the control group to be as similar as possible so that we can compare profit performance.