Can I sell the greeting cards I have made using Hallmark Card Studios as my own with their graphics?

I have recently decided to set up a greeting cards business, I understand this is an extremely competitive market, however I have some ideas which I've not seen on the market and I want to give them a try, my question is if I buy Hallmark Card Studio and decide to put one of the graphics included in the bundle on one of my cards or use one of their fonts included, can I then sell these? I'm assuming yes otherwise why would they sell this bundle to people? I may be wrong...