Considering foot locker's offer,
Original price = $72.5
Discount = 20%
Value of discount = 20/100 * 72.5 = 14.5
The discounted price is
72.5 - 14.5 = 58
If a sales tax of 6.5% is applied on the discounted price, the value of the tax is
6.5/100 * 58 = 3.77
The final price would be
58 + 3.77 = 61.77
The total cost of 12 Sneakers at foot locker would be
61.77 * 12 = $741.24
Considering finishline's offer,
Original price = $54.75
Processing fee = 9%
Value of processing fee = 9/100 * 54.75 = 4.9275
Shipping fee for each pair is 5.99
The cost per sneaker is
54.75 + 4.9275 + 5.99 = 65.6675
The total cost of 12 sneakers is
65.6675 * 12 = $788.01
Therefore, the cheaper and best deal is that of Foot locker