You are only allowed to donate via PayPal any Runescape content being used as a donation will cause in account termination in-game as well as the staff member whom took the donation in the first place.
Runescape Content Being: Runescape Subscription Cards, Runescape Gold, and Runescape Accounts etc.
Runescape Content Being: Runescape Subscription Cards, Runescape Gold, and Runescape Accounts etc.