Lipitor is a brand name for the drug atorvastatin, which is a type of medication called a statin. Statins are used to lower cholesterol levels in the blood and reduce the risk of heart disease.

According to Drug Patent Watch [1], the first patent for Lipitor expired in 2011, which allowed for the production of generic versions of the drug. The cost of Lipitor has decreased since then, but it is still more expensive than some generic versions of atorvastatin.

Drugs.com [2] provides a comparison between atorvastatin and Lipitor. The site notes that atorvastatin is available as a generic drug, which is usually less expensive than brand-name drugs like Lipitor. The site also notes that the cost of atorvastatin can vary depending on the pharmacy and location.

GoodRx [3] provides a comparison chart of statins and their prices. The chart shows that generic atorvastatin is generally less expensive than Lipitor. The site also notes that the price of atorvastatin can vary depending on the strength of the medication and the pharmacy.

In conclusion, the cost of Lipitor has decreased since the expiration of its patent in 2011, but it is still more expensive than some generic versions of atorvastatin. The cost of atorvastatin can vary depending on the pharmacy and location, but in general, it is less expensive than Lipitor.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.drugs.com/compare/atorvastatin-vs-lipitor
[3] https://www.goodrx.com/classes/statins/intensity-comparison-chart