CA: http://ncix.com/search/?categoryid=0&q=benq+bluecore
US: http://us.ncix.com/search/?categoryid=0&q=benq+bluecore
They aren't cheap, but the idea is that they'll save money in the long run. These laser projectors have 8 segments in their DLP wheels (better colour accuracy and depth) and shouldn't require any replacement parts within the normal lifecycle of the product!
