QUESTION 3 - Please answer (a) and (b) separately

On 12/15/10, John, age 25, contracts to sell a case of imported dandelion wine to Joe, age 18, for $700, delivery and payment to be made 1/5/11. The State age of majority to enter into contracts is 18. The State legal age for purchase (including entering contracts to purchase) of liquor, at that time, was 18. On 12/16/10, Joe finds an alternate vendor who will sell for $600, but John refuses to cancel the contract. On 12/20/10, the legislature changes the age requirement with regard to purchase of liquor to 19, effective 12/31/10. On 1/5/11, Joe refuses to accept or pay for the wine from John.

3a. What remedies (if any) are available to John? WHY?

3b. Same facts as above, except the State changes the legal age back to 18 on 1/3/11.

What remedies (if any) are available to John? WHY?