Also available is the Esme Dual-Fold Nylon Sleeve for 13" / 15" Macbook Air or Pro (pictured) for $4 with free shipping. That's also tied with last week's mention as the lowest total price we could find for any such nylon sleeve by $2. It features a smaller front pocket for a tablet or other accessories.
Netdirectsales via eBay offers the Targus Laptop Cooling Chill Hub, model no. AWE12US, for $14.99 with free shipping. That's $2 under our September mention and the lowest total price we could find by $2. It features an integrated 4-port USB hub and two fans.