no - the analysis is done on receipts, not just total products sold. They don't care what you bought, they care to know that people who buy diapers also buy wipes, and people who buy soy milk don't buy butter, etc. The analysis of anonymous receipts still yields very interesting and actionable results in aggregate. Your privacy has nothing to do with how a company analyzes its sales data as long as they don't include your identity and drill down into analyzing your receipt alone.