Free Digital Prints

Jessops are offering free prints of digital photos. 10 free 7x5" prints. I thought it couldn't be true, but we just tried it and it came up as "10 7x5" prints @ 0p each. Total for this order = £0.00 including delivery". It didn't even bother asking for credit card details. We're now going to get 10 free pictures from my colleague's wedding and Hen night.