Yugster offers the Valencia Canvas Shoulder Sling Bag in five colors for $16.97. Coupon code "DNVALENCIA" cuts it to $15.97. With free shipping, that's tied with last week's mention and the lowest total price we've seen. (Outside of the seller below, it's the best deal now by $4.) It features an adjustable strap, zipper pockets, and polyester lining.
A close price, Tanga offers it for $16.99 with free shipping.