In short, no I don't think so. You can call Heirloom Roses in Halifax to find out if it's one of the varieties they have but don't list... see their website.
http://www.oldheirloomroses.com/

Or Sam Kedem Roses in Minnesota carries Prairie Sunrise and will ship to Canada.
http://www.kedemroses.com/

I'm wondering why this rose in particular? It looks like many of the commonly available Austin roses to me... maybe a substitution? Anyway I hope you find what you're looking for.

No Prairie Sunset, but they do sell Prairie Princess and Prairie Star at Cedar Hollow Rose Farm in BC.

Here is a link that might be useful: Cedar Hollow Rose Farm

Further to my previous post, a few Austins you might be interested in are:

Abraham Darby
Evelyn
Tamora

If you want something with a similar bloom colour and form.

Thanks for the suggestions. I have considered Abraham Darby, Tamora and Eveyln but I was wondering if Prairie Sunrise might be slightly more hardy and have a better growth habit. I've heard that the Austins can sometimes be leggy. I absolutely loved the pictures of Prairie Sunrise on Help Me Find. I am ordering Lilian Austin this year from Pickerings after seeing it bloom all summer long at the Experimental Farm in Ottawa. It will be the first Austin I grow.