Paul Elliot of Zozer Games has kindly offered to sponsor the contest, since the top prizes are copies of his game and, as a bonus he's going to throw in a pdf copy of the Warband supplement to 43 AD to the 1st place winner. 43 AD was nominated for best roleplaying game of 2012 at this year's UK Games Expo.
So, now I am scurrying to find some more prizes with a Roman theme to go with this, but, thus far, the contest prizes are-
1st place pdfs of 43 AD and Warband, an 8"x10" canvas print and a custom character portrait.
2nd and 3rd are the pdf of 43 AD and the custom character portrait.
I'll work on differentiating 2nd and 3rd places a bit, I still have some sponsorship irons in the fire and I'd like to see how they pan out before I commit anything from my collection to the prize haul.
EDIT- just to be helpful Richard LeBlanc of the Save Vs Dragon blog and New Big Dragon Games has already posted something to help inspire everyone for the contest here.