Lipitor (atorvastatin calcium) is now off-patent and will be available as a lower-cost generic in the near future. Pfizer, the patent holder for Lipitor, has vowed to lower their price to fight the generic providers. You can read n=more about it here
Regardless of whther you buy the equally effective generic form or continue to buy the brand name product make certain you are paying the lower price! Ask your doctor or pharmacist about it.