Based on the provided sources, Lipitor (atorvastatin) and Pravastatin are both medications used to lower cholesterol levels. However, the average cost of Lipitor appears to be higher than that of Pravastatin.

According to the Drug Patent Watch website, Lipitor is a brand-name medication that has lost its patent protection, meaning that generic versions of the drug are available. This suggests that the availability of generic Lipitor may have contributed to a decrease in its cost over time [1].

The GoodRx website provides an intensity comparison chart for statins, which includes both Lipitor and Pravastatin. The chart shows that Lipitor is classified as a high-intensity statin, while Pravastatin is classified as a low-intensity statin. Generally, high-intensity statins tend to be more expensive than low-intensity statins [2].

Furthermore, the Drugs.com website offers a comparison between Lipitor and Pravastatin. It states that Lipitor is typically more expensive than Pravastatin [3].

In conclusion, based on the provided sources, it can be inferred that Lipitor tends to have a higher average cost compared to Pravastatin. However, it is important to note that actual prices may vary depending on factors such as location, insurance coverage, and pharmacy discounts.

Sources:
[1] Drug Patent Watch: Lipitor - https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] GoodRx: Statins Intensity Comparison Chart - https://www.goodrx.com/classes/statins/intensity-comparison-chart
[3] Drugs.com: Lipitor vs Pravastatin - https://www.drugs.com/compare/atorvastatin-vs-pravastatin