I noticed this on ebay tonight for $54. For those that do not have the high rise, here's an economical option.
http://www.ebay.com/itm/Kubota-RTV-...Parts_Accessories&hash=item2c6af29c49&vxp=mtr
http://www.ebay.com/itm/Kubota-RTV-...Parts_Accessories&hash=item2c6af29c49&vxp=mtr