Hey /vp/

So I'm going to do a little business where I essentially buy and sell pokemon cards on ebay.

Problem is, I don't know how to get cheap bulk. I mainly need ultra rares, because commons, uncommons and rares arent a huge issue.

But still, where can I get this bulk? I live in canada so its hard to get cheap shipping from the states and such...

Any help on this matter is appreciated.