A Place in the Sun via eBay offers the ARSNL Men's Fleece Full Zip Ninja Hoodie in
Grey, Desert, or Black (pictured) for $19.96 with free shipping. (Webzom via Amazon offers it to Prime members for the same price.) That's the lowest total price we could find by $6 and the best deal we've seen. It's available in sizes XS to L XL, although not in all size/color combinations.