Office Work Company orders two hundred staplers from Office Supply Store at the price of $3 per stapler. Office Supply Store accepts the offer by promising prompt shipment. Office Supply does not make a prompt shipment, and no staplers are ever delivered. Office Work Company proceeds to buy two hundred staplers from another supply company. What are Office Work Company’s damages under the UCC, assuming it paid (a) $3.20 for the replacement staplers, (b) $3.50 plus $.10 in shipping expense for the replacement staplers, and (c) $2.80 for the replacement staplers?