You are looking at your auctions in eBaydotCA. Most Canadians appreciate having both currencies available, even though we are comfortable with buying and selling in US dollars.
To remove the loonies, just got to the address bar up at the top there and change ebay.ca to ebay.com. That will take you to the US site.
If that is too tricky- and it can be- sign out, close eBay, go to Google, enter eBay.com and sign in.
