That's less than $30 CAD shipped per sensor. I personally don't want to run a 1-wire sensor because I've heard of problems with it not heating up fast enough and the ECU throwing an inversion code, these would be the perfect replacement.
The only problem I see is that shipping could take a while, but living in Canada and always using the cheapest shipping method, I'm used to waiting weeks for something to arrive.
EDIT: These are also these ones, located in the U.S http://cgi.ebay.ca/NEW-BORG-WARNER-UNIV ... .m20.l1116
$11 and $2 per extra item for shipping to Canada, so a bit more expensive but they'll get here much faster.