eg. Canadian banks charge $5 for a money order. US banks usually sell cashier's check for $0-0.5. US post office sell money order for $0.8.
Today I bought a money order in CAD from a bank, for my wife's application fee. The rate is 1.52978 and the comminssion fee is 20USD. So 60 CAD cost me 59.22USD. Almost 1:1.