It is rare for cash prizes to be awarded. Mostly it is trophies and certificates. Some Clubs or organisations do give cash prices at the top level.

I personally haven't seen one at the present. Here are some trophies I won from the last show I entered.

http://i8.photobucket.com/albums/a26/darrylw/PR-054.jpg
http://i8.photobucket.com/albums/a26/darrylw/PR-053.jpg