I found out from the printer that we can actually print both winning cards for free. 2500 of each back and front.
Stock would be like normal postcards. So not laminated in plastic but I guess that could be done individually if someone wants it.

RJM, could you mail me your artwork please today.
Back and front, CMYK, text outlined, bleed and cropmarks
mail to: holger@minddesign.co.uk

Make sure its not bigger than 5MB (shouldn't be as it is al vector based)