OK, here is one for $64.99 + $12.99 shipping
http://www.savannajones.com/products/92034_16_07.htm
The model # is different (Model 304ST) but according to MSN Shopping they are the same product.
"Fits nearly all externally mounted spare tires, including those with Over the Tire third brake lights. Fully assembled - sets-up and installs in seconds. Patented tie-down system individually secures and protects bicycles. Dimensions: 29 x 18 x 5 Product Instructions - Note 303D is the same as 304ST"