Tim - 11:16 pm on Mar 7, 2004 (gmt 0)
It is similar to unsubscribing. If your page is in for free then your free page will be shown when your account runs out. If you are not in for free then your page will drop out of the index. Fairly straightforward. This also answers the question for people: how do I know if my paid page is also in the free crawl?