Silicone is going to be pricey as hell. There are a bunch of really nice latex ones on the bay though, thin cast so you don't have to worry about blending lines.<a href=\"http://cgi.ebay.com/3-Scars-for-Joker-Costumes-Latex-Make-Up-Prosthetic-Kit_W0QQitemZ380051260028QQcmdZViewItem\" target=\"_blank\">http://cgi.ebay.com/3-Scars-for-Joker-Cost...8QQcmdZViewItem</a>Best on the bay right now.