The author, on pp. 49-52, talks about how firms deliberately lower the quality of some goods as a way of allowing them to charge certain consumers higher prices. Come up with two examples, different from the ones in the reading, where real world firms show examples of this (At least one of your examples must be onewhere it is more costly for a firm to produce a lower quality product or service.) Provide any relevant sources that would support the claims you are making.