A tried and true approach that I and others used to buy a Prius at MSRP during the height of the shortage was to email/call rural dealers. I bought mine in 24 hours, when the city dealer was quoting 9 months.

btw, why 4WD ? If it is only snow, slush and ice, the VSC equipped Prius with good winter tires like the MIchelin HydroEdge perform wonderfully. Steep hills would make me hesitate.