Worst case, you could probably also order them from
Digi-Key or Mouser.
Not sure what their Canadian shipping prices are like.
Worst case, you can use individual pins (IIRC, sames as 5.25" connector)
and mold your own insulation around them. On my first one, I just wrapped
each pin with electrical tape (which is a risky way to do it)
BTW, 8" drive power requirements are not completely standardized. I
needed different connector? and one different voltage to use a Tandon 848.
I had access to LOTS of 5.25" bare pins and used connectors, due to my
previous partnership in Elcompco, making and peddling 5.25" 2 drive units
with smoked plex covers.