Accept Altcoins, especially privacy focused coins (Monero, Alias, etc.) - Feedback / Suggestion - PIA Support Portal
Information regarding accepting Monero can be found here:
Information regarding accepting Alias can be found here:
My understanding is that it's a bit easier to start accepting Alias as a merchant than it is to start accepting Monero, but I could be mistaken. Regardless, I'd like to see PIA accept at least one of these coins, if not both, as forms of payment.