Luckapen via eBay offers this Knit Full-Face 3-Hole Ski Mask in Black for $1.64 with free shipping. That's the lowest total price we could find for any full-face knit ski mask by $2, excluding the below mention and other eBay vendors. Note that this item ships from Hong Kong and may require three to eight weeks for delivery.

Want one sooner? Homie Gear via eBay offers its HG 1-Hole Motorcycle Ski Mask or 3-Hole Mask in Black or Navy for $1.99 with free shipping.