You gotta use a proxy find the 7 Days Trial Button in runescape open it as a private page then enter your credit card info cancel it after and theres ur 7days free.
:O Whats the main goal of a buisness you think? If i were jagex i wouldnt give a fuck about Free to play and i would try to get the most money i can by trying anything.
I don't think it's possible if the account has already been P2P. I thought I could get away with trading and selling my leftover members items on one of my pures. I was wrong.