Libre if you have money and by extension the opposite of gratis; and even then, in the US there are limits on what can be legally said in an advert.

https://truthinadvertising.org/resource/federal-laws-governi...

(Although, IANAL, so I can't tell if that page is an accurate summary or if it's the legal equivalent of someone ranting about why the CEO of Facebook can't stop naughty pictures showing up in Google search results…)