Unsolicited advice: don't put your personal email into a Board posting unless you really really like spam email.
Although it is possible to put all your items into a shopping cart on eBaydotCOM, this is not possible on dotCA.
Remember that you are not buying from eBay, but from one of many thousands of separate sellers who could be anywhere in the world.
DotCOM buyers are more likely to be buying from US sellers, making the shopping cart more workable.
But dotCA buyers are as likely to be buying from Canadian, US, UK or Chinese sellers as all from one country.