It actually depends on what loft company you use and if you reserve it online or not.
Vermont Loft and Futon will cost $125 for the full school year, but if you reserve it online, it will cost $110. (http://www.vermontloftandfuton.com/SMC2011LoftOrders.asp#MidSizeLoft)
Loftmeister will cost $100 if you reserve it online. (http://www.loftmeister.com/)
Hope this helps :)