dib-bid via eBay offers this Hairdressing Barber Salon Cape for $2.63 with free shipping. That's tied with last week's mention and the lowest total price we could find by $3, outside of the mention below. It's waterproof and measures approximately 55" x 33". Expect this item to arrive in two to three weeks.
A close price: eDarenUS via eBay has it for $2.68 with free shipping.