The cost of generic Lipitor, also known as atorvastatin, can vary depending on several factors such as the pharmacy, location, dosage strength, and quantity purchased. While I cannot provide real-time pricing information, I can give you a general idea based on the sources you provided.

According to DrugPatentWatch, the patent for Lipitor expired in November 2011, allowing generic versions of the drug to enter the market [1]. This means that multiple manufacturers can produce and sell generic atorvastatin, which often leads to lower prices compared to the brand-name version.

The Amazon Pharmacy website lists a generic version of Lipitor, with the active ingredient atorvastatin, available as an oral tablet [2]. However, the specific pricing information is not mentioned on the website, as it may vary over time.

To get a better idea of the current pricing, you can refer to the GoodRx website. GoodRx is a platform that provides information on drug prices and discounts at various pharmacies. According to their website, the average retail price for atorvastatin ranges from $10 to $30 for a 30-day supply, depending on the dosage strength and location [3]. However, keep in mind that these prices are subject to change and may not reflect the exact cost you will find at a specific pharmacy.

It is important to note that purchasing medications online should be done with caution. Make sure to only purchase from reputable and licensed online pharmacies to ensure the quality and safety of the medication.

In conclusion, the cost of generic Lipitor, or atorvastatin, can vary depending on several factors. It is recommended to check with different pharmacies or online platforms like GoodRx to get the most accurate and up-to-date pricing information.

Sources:
[1] DrugPatentWatch. Lipitor. Retrieved from https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] Amazon Pharmacy. Atorvastatin (Generic Lipitor) Oral Tablet. Retrieved from https://pharmacy.amazon.com/Atorvastatin-Generic-Lipitor-Oral-Tablet/dp/B084BW7STT
[3] GoodRx. Atorvastatin Prices, Coupons & Savings Tips. Retrieved from https://www.goodrx.com/lipitor