It'll defiantly go up. Take it from me, if you're going to quit, DO NOT, and i repeat, DO NOT stake your entire bank and quit. Be wise and sell your yellow partyhat for a rough amount of about $700+. You could quit runescape, while being $700+ richer.
Yeah, you need to place the information of your credit/debit card while you are on the purchasing link of the Squeal of Fortune. Information regarding your credit/debit card will NOT be saved just as long as you remember to disable the "save for next time" button.