I find that using the search filter for sellers from worldwide, or from canada only, offers me very little functionality.
What I really want to be able to restrict my searches to is items that are being sold in CAD.
I realise I can set ebay to display a conversion of the price. But items that are actually going to bill you for CAD are few and far between. And I wish to purchase an item for 6.41 CAD. Not an item that is sold by a seller is calgary for 4.99 USD, converted into 6.41 CAD, leaving me with exchange fees.
I get that sellers dont want to put their items up in CAD for various reasons. Well, let me as a buyer have the options to filter those out so I can find the merchants that are actually doing business in my currency. This seems like a no-brainer.