I had them printed at Instaprint in Nottingham - www.instaprint.com. They have been wonderful - and I'm delighted with the results. Hope my customer is too!
In case you're wondering, it's Welsh (with 4 letter Ds in a row on the last line!) and says Merry Christmas and a happy new year.
If you would like a pack for yourself, please contact me.
They're A6 cards and have "Merry Christmas and a happy new year" inside.
They're £8 for a pack of 10, plus £2 p&p (UK address).