Happy Farms, Inc. ordered 1,000 gallons of a specialty pesticide, "Berry Good," for its berry crop. The total price of the order was $15,000. Happy Farms paid $5,000 up front and promised to pay the balance upon delivery. JA changed the order to a newer product "Very Berry Good" without notice to or consents from Happy Farms. Upon delivery, the head farmer at Happy Farms, Allison Kagan, noted that the product was not the same as she ordered. Later that afternoon, Kagan notified JA that the pesticide was not what she had ordered and refused to pay the balance on the shipment. Happy Farms held the boxes of pesticide, but, to date, JA has not retrieved them. What are JA's legal options in this situation?