Here is a listing of completed sales on eBay that I found:
http://www.ebay.com/sch/i.html?_odkw...chine&_sacat=0
Seems like a reasonable price range is about $660 to $1,000+. If you click on the completed listings that have a green sales price (meaning they sold for that price), you will get more information about individual machines. The higher end ones seem not to have been used much, come with original packaging and unused accessories, etc. The lower priced sales are probably machines that have been used regularly, come without original packaging, etc.
Edit: These are from eBay in the U.S. Prices may be higher in Toronto?