Lipitor is a brand-name medication used to treat high cholesterol. Atorvastatin is the generic version of Lipitor. According to DrugPatentWatch [1], the patent for Lipitor expired in 2011, which allowed other pharmaceutical companies to produce generic versions of the medication. As a result, the cost of atorvastatin is significantly lower than Lipitor.

GoodRx [2] reports that the average retail price for atorvastatin is $13.94 for a 30-day supply, while the average retail price for Lipitor is $520.99 for a 30-day supply. This is a significant cost difference of over $500. However, the actual cost of both medications may vary depending on the pharmacy, location, and insurance coverage.

SingleCare [3] states that the cost of atorvastatin without insurance can range from $9 to $79 for a 30-day supply, depending on the dosage and pharmacy. They also offer a coupon that can reduce the cost of atorvastatin to as low as $4.

In conclusion, the cost difference between Lipitor and generic alternatives such as atorvastatin is significant. Atorvastatin is much cheaper than Lipitor, with an average retail price of $13.94 for a 30-day supply compared to Lipitor's average retail price of $520.99 for a 30-day supply. However, the actual cost may vary depending on the pharmacy, location, and insurance coverage. It is advisable to compare prices and use coupons or discounts to save money on medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.goodrx.com/atorvastatin/what-is
[3] https://www.singlecare.com/blog/atorvastatin-without-insurance/