将价格单位列为每盎司而不是单元单位。
But she said setting a minimum price per unit was "probably illegal".但她表示,设置单位商品的最低价格“可能是非法的”。
If two scenarios exist that result in the same profit, you should choose to buy at the lowest price per unit.如果存在两种情况都能获得同样的利润,你应该选择在每个单元最低价的时候购买。