Help, I made chocolate mmf fondant last night.  Three whole recipes, and now all of it just seems to crumble when I need it.  I've tried adding in Crisco, but now it's just too soft and breaks and cracks, even just teeny pieces fall apart.  Is there a fast fondant I can make, or should I just give up and buy some?  What is a good price for fondant?  Thanks for your help.

AIf you are considering buying fondant. Michaels currently has a 50% off coupon. I believe the fondant goes for a bit over $10.