Looking for Printers for greeting cards

Most colour printers will print greetings cards, however you will need good graphics software, ones that will allow this (that;s most of them) will have templates built in to the installation that you can just modify as needed.

I know most printers say a max sheet of 80 - 100gsm, for the odd sheet or two it's safe to go to around 160gsm, and you'll need that for a good card.