Generic Advil is significantly cheaper than the brand-name version. According to DrugPatentWatch [1], the patent for Advil expired in 1984, allowing other companies to produce generic versions of the drug. NPR [2] reports that generic ibuprofen, the active ingredient in Advil, is sold at a fraction of the price of the brand-name version. In fact, NPR cites a study that found that consumers could save up to 95% by purchasing generic ibuprofen instead of Advil. The Guardian [3] reports that there is no evidence to suggest that branded painkillers work better than their generic counterparts, and that the only real difference between the two is the price.

In conclusion, based on the sources provided, generic Advil is significantly cheaper than the brand-name version. Consumers can save up to 95% by purchasing generic ibuprofen instead of Advil. There is no evidence to suggest that branded painkillers work better than their generic counterparts.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.npr.org/sections/money/2013/07/05/198504001/why-doesnt-everybody-buy-cheap-generic-headache-medicine
[3] https://www.theguardian.com/science/2016/oct/03/do-branded-painkillers-work-better-than-cheaper-generic-ones-iboprofen-nurofen