The new Hornby Big Boy is out on Ebay, but is looks just the same without the brake shoes and poor detail compared to the Genesis, PCM or Trix. They are not cheap but will probably go for two hundred or less at Discount houses.
http://cgi.ebay.com/NEW-JUST-RELEASED-HO-RIVAROSSI-Hornby-Big-Boy-DCCready_W0QQitemZ200039238932QQihZ010QQcategoryZ19129QQrdZ1QQcmdZViewItem