In case anyone here is not aware, Amazon is selling 30 day membership cards for $5.70 (40% off!!!!). Enjoy your discount while it lasts! Before you think it's advertising, it is not a referral link as it has been posted multiple times on official Runescape forums and Reddit. With Bonds surging way above 13M a piece, it might be a good time to start buying membership for cheap.
Although it states that you must use a USA address, the membership is not being shipped to your address. Just use a random USA address if you do not live in the states (like me). It is automatically added to your Runescape account (link it to Amazon). You can buy as many as you want in your cart.
Hope it helps everyone!