A couple of years ago, in my first on-line dialogue with Canada's country manager, I inquired as to why I wasn't able to find my ebay.ca listings on ebay.com. I was basically dismissed and told that I didn't know what I was talking about because all listings on ebay.ca got equal exposure on ebay.com.
Here are my current listings, including the 30 that I listed today with the eBay.ca promotion, on ebay.ca: http://search.ebay.ca/_W0QQsassZsystemagic
Total listings = 152.
Here are my current listings on eBay.com: http://search.ebay.com/_W0QQfgtpZ1QQfrppZ50QQsassZsystemagic
Total listings = 122
Note: Naturally, with listings expiring daily, these pages will change for anyone not viewing them currently. There should be a disparity of 30 for about a week however.
This is proof positive that Ebay.ca listings don't get equal exposure in the much more vast US market.
This means that, unless there's a promotion, or you sell Canadiana, or there's some other reason to limit your sales to the much smaller market - NEVER LIST ON EBAY.CA.