After reviewing the sources provided, there is no information regarding a limit to the rewards for Lipitor refills. However, the sources provide some relevant information about the drug and the pricing.

Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood [1]. The drug is manufactured by Pfizer and was approved by the FDA in 1996 [1]. According to DrugPatentWatch, the patent for Lipitor expired in 2011, which means that other companies can now produce generic versions of the drug [1].

The pricing of Lipitor and its generic versions has been a subject of controversy. In 2016, the Federal Trade Commission (FTC) filed a complaint against GoodRx, a company that provides price comparison information for prescription drugs, for misleading consumers about the savings they could get from using GoodRx to purchase Lipitor and its generic versions [2]. The complaint alleged that GoodRx's price comparisons were inaccurate and that the company failed to disclose that it received fees from some pharmacies for promoting their products [2]. The case was settled in 2017, with GoodRx agreeing to pay $4.1 million in penalties and to change its advertising practices [2].

Lipitor's official website does not provide information about rewards for refills [3]. However, the website does offer a savings card that can be used to reduce the cost of Lipitor for eligible patients [3]. The card can be used for up to 12 prescriptions and can save patients up to $75 per prescription [3].

In conclusion, there is no information available regarding a limit to the rewards for Lipitor refills. However, the sources provide information about the drug and its pricing, including a savings card that can be used to reduce the cost of Lipitor for eligible patients.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ftc.gov/system/files/ftc_gov/pdf/goodrx_complaint_for_permanent_injunction_civil_penalties_and_other_relief.pdf
[3] https://www.lipitor.com/