HOW CAN I PURCHASE A CASH KEY? CashKeys are always available at the Division of Campus Parking and Transportation Office, 1110 W. Springfield Ave., from 8:30 a.m. - 5 p.m., Monday - Friday, except Official University holidays. There is a one time fee of $17.50 per key. CashKeys can be purchased by cash, check, MasterCard, Visa, Discover, or American Express.