Some of your items are listed on dotCOM, some on dotCA.
You can check which by going to dotCOM and clicking on each one.
If they are listed on dotCA, both currencies will show as the asking price.
Since I list on both sites, I find it useful when I finish listing for the day, to go back to my Items For Sale list, check off all my new listings, and use Add Note to put the site I have listed it on. (I also add the month and year, because I do a lot of Good Til Cancelled listings).