I bought 4 Maxxis 235 80R16 tires on E-bay for $660.00 shipped to my door. I don't know how much the 225 15's would be, but I have to assume less than that. Also not sure how shipping to Canada works for you. But the tires were very new by the date code (only a couple of months old) and have been fine so far.
Ed and Sharon
2010 Wildcat 28RKBS
2011 Ford F-250 XLT, 6.7L PSD
Ride-Rite Airbags and Airlift wireless remote compressor...nice!
I thought I was wrong once, but I was wrong!