See if the CompUSA store around you has a business sales department, and see if they will put the prepay in for you. The business sales department and the retail department are two very different entities all residing in one building...right hand meet left hand, 'nuff said. Here is the sku: 334950
As an aside, the business sales department is the only one left in CompUSA that is on commission, the benefit of shopping with the business guys is "preferred pricing" aka discounts, so if there is say 35% markup on something (cables and accessories) maybe you get it at 16%-20something%, you do NOT have to own a business to shop with them...the downside is because hardware is usually under cost, you are not going to have someone break their back to find something for you (depending on the person).
Don't automatically shoot down the TAP (service plan) some are good, some are worthless. Having service basically helps you "massage the system" (e.g. always by TAP on a printer, after a year and a half, tell them its broken and get yourself a new one (not saying I ever suggested that
))