Since you are new here, I guess you are unaware of a few things.
EBay is a shopping mall.
Not a store.
If you are buying from several sellers, it's like buying some stuff at Bombay Company, some at Sears, and some at Bowering.
Every seller is an individual.
If you buy from several sellers you cannot put all the items in one cart and have them shipped together. They will be coming from all over Canada (and perhaps from all over the world).
You may be able to pay for them all together if your sellers put up the listings ONLY on eBay CANADA. But the shopping cart only works for Canadian OR for US* sellers.
If you buy several items from one seller, before paying ask her if she will combine and discount shipping. Actually, ask this before bidding.
BUT
Watch out for this
Customs services and international tracking provided
That means the seller is using the Global Shipping Program. The high cost of shipping includes the Canadian duty and Canadian sales tax on your purchase. There is also a ~$5 service charge.
Don't bid on low value items with those words attached.
And to make that even more difficult, you won't easily see that note if you are shopping on a mobile or if you are using Gallery View Search.
If the items you are looking for cost over $100CDN (about $75USD) the GSP can actually be cheaper than shipping directly to you.
HOWEVER
Sellers using the GSP cannot combine and discount shipping.
If you are interested in an item but the shipping seems high, use Contact Seller to discuss possibilities. The ones who are willing to talk are usually the ones who will have the best overall deals.
*To complicate things, the "US" seller may be in the US or Canada or China or Kazakhistan but lists on dotCOM.
