Shopping in the United States – Here is some information on crossing the border from Canada to the United States. http://www.tourismniagara.com/travel-information/1180-border-crossing-.html
See the handy currency converter as well. http://www.bankofcanada.ca/rates/exchange/daily-converter/
Please note that Maple Court Cottages, in Port Dover, Ontario has had no input into the above web sites and that anyone wanting to cross the border and have additional concerns should contact either Canadian Customs or United States Customs for more in-depth information.