Lipitor is a popular brand-name medication used to lower cholesterol levels in the blood. The price of Lipitor has been a topic of concern for many people. According to the sources provided, it appears that the price of Lipitor has fluctuated over the years.

The first source, Drug Patent Watch [1], shows that the patent for Lipitor expired in 2011, which opened the market for generic versions of the drug. This led to a significant drop in the price of Lipitor.

The second source, GoodRx [2], provides current pricing information for Lipitor and its generic versions. As of August 2021, the average retail price for Lipitor is $11.52 per tablet, while the average retail price for atorvastatin (the generic version of Lipitor) is $5.31 per tablet.

The third source, Reuters [3], reports that Pfizer, the manufacturer of Lipitor, faced a significant drop in sales after the expiration of the patent. To maintain its market share, Pfizer offered discounts and rebates to insurers and pharmacy benefit managers. However, the article does not provide specific information on the price of Lipitor.

In conclusion, while the price of Lipitor has fluctuated over the years, it appears that the cost of the medication has decreased since the expiration of the patent in 2011. Currently, the generic version of Lipitor, atorvastatin, is significantly cheaper than the brand-name medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.goodrx.com/atorvastatin
[3] https://www.reuters.com/article/cbusiness-us-pfizer-idCATRE7A026B20111101