Acme Department Store has a sale on luggage. It is offering $30 off any new set of

Question:

Acme Department Store has a sale on luggage. It is offering $30 off any new set of luggage to customers who trade in an old suitcase. Acme has no use for the old luggage and throws it away at the end of each day. Is this price discrimination? Why or why not? Which of the conditions necessary for price discrimination are or are not met?