12 month Runescape card

So someone owes me runescape membership and he wants to buy the 12 month card on runescape.com (Jagex Store) with his credit card

I don't know if it's a stolen credit card or anything, I just want to know if there are any risk to this for me and my main account

Thanks

 

IF the card is in fact stolen, then when the owner gets the card back and cancles the payment, you will be given NEGATIVE 12 months of membership that can't be removed until another 12 months is payed for.