Canadian Tire: YMMV WinterTrek studdable 245/70R16. Up to - 80% OFF - ($39.98 reg $200.99)

Probably not the best tire out there but it's available on clearance at many locations between $39 and $100. this is cheaper than used from a shady facebook marketplace seller. As always with Canadian Tire clearance YMMV by locations, you can check your local stock and price here