I bought a card from Moonpig
There are many styles to choose them, and you can upload your own images and have the card sent directly to the recipient (dispatched on a day of your choice) or posted to you.
The card has their logo on the back, and also a slogon and website address. The envelope that comes supplied is embossed with the logo, also. Far too much advertising in my opinion.
Card price - Â£3.50 approximately, including postage.
The printing is good.