As one of its daily deals, That Daily Deal offers the Heated Sox Men's or Women's Insulated Thermal Socks for $5.49 with free shipping. That's the lowest price we could find by $4, although we saw them for a buck less in February. They're available in men's size 8 to 12.5 or women's size 5 to 10.
Note: The color you'll receive will be chosen at random.
The dollar store is the most amazing place to find bargains for certain purchases. Yes, even pregnancy tests.