Looking for these rigs with approx price (CAD):
Antminer S3 & S3+ = $30
AntMiner S4 = $700
Antminer S4+= $800
Antminer S5 = $270
Spondoolies SP31 = $ 1,050
You probably won't get any offers at those rates. Trust me. I am located in Canada also and the cheapest S3/S3+ I can find is around $120 and the cheapest S5 was $400 Canadian.
Maybe you might get some takers on your S4 and SP31 prices but I have no idea how much they are worth.