What if I want to cancel my membership, am I bound to GDI with some sort of contract?

In the unlikely event you want to cancel your membership, you simply call GDI and tell them. All of the information you need to cancel is on the website. You can join on a month to month basis, or for a year or more. It is up to you and there is no cost difference. Here is some corporate contact information:

Alan C. Ezeir
WebSite.ws
(760) 602-3000 ext. 5102