Here you go -
"Depending on the quantity ordered and the level of customization, prices range from $20 - $35 per hitch cover. The targets below are for 1 1/4 or 2-inch receivers for any car, truck or SUV. They can also be created with a stainless steel bolt for a golf cart or trailer."
http://kellerscustomwork.com/
http://kellerscustomwork.com/kellerscustomwork.com/Products__Prices.html