I'm not sure I see a problem with this. Companies experiment with different pricing all the time.
For example, you ever received a postcard from the cable or phone company with a special offer? Do you think that all the customers get the same card? No...they segment their customer groups to see what types offers work best.
For example, you ever received a postcard from the cable or phone company with a special offer? Do you think that all the customers get the same card? No...they segment their customer groups to see what types offers work best.