Hours spent filling out medical and financial forms: a bajillion.
T.B. skin test: Ouch (but... free. Thanks, Dr. Rockman!)
Sending forms by speedy Canada Post: $20
Student and Exchange Visitor Information System Program fee: $100
Hours spent trying to understand visa interview instructions on U.S. government website: maybe two... felt like so much more.
Finding out that Canadian citizens do not need a visa to study in the United States: Priceless.