Advil is a popular brand of ibuprofen, a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain, reduce fever, and decrease inflammation. As of 2021, Advil is available over-the-counter (OTC) without a prescription, meaning that it can be purchased without a doctor's approval. The price of Advil can vary depending on the retailer and location, and it is possible to find it on sale at various stores or online retailers. However, it is important to note that the sale and purchase of drug products containing pseudoephedrine and ephedrine are regulated by the FDA [2], and Advil does not contain either of these ingredients. Therefore, the legal requirements for the sale and purchase of Advil are not subject to the same restrictions as products containing pseudoephedrine and ephedrine. It is always advisable to check with your local pharmacy or retailer for any current sales or promotions on Advil [1][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.fda.gov/drugs/information-drug-class/legal-requirements-sale-and-purchase-drug-products-containing-pseudoephedrine-ephedrine-and
[3] https://www.advil.com/