Daily Steals offers these Unisex Memory Foam Heated Slippers With Rechargeable Batteries in Black or Tan for $89.99. Coupon code "DSLIPPERS" cuts that to $42.99. With free shipping, that's the best price we could find by $57. They're available in S/M and L/XL.
The dollar store is the most amazing place to find bargains for certain purchases. Yes, even pregnancy tests.