The coach for a basketball team wants to buy new shoes for her players. super spots is offering a 20% discount on each pair of shoes, which were originally priced $72.50. a 6.5% sales tax will be applied to the discounted price. the same shoes are also available on double dribble's web site for $ 54.75. a 9% processing fee will be applied to the cost of the shoes, plus a shipping fee of $5.99 for each pair. what is the difference in the total cost of the 12 pairs of shoes between the two