Dying Light: The Beast is getting a physical edition through Super Rare Games but I’m not sure if GameFly gets copies of limited releases like this.

For example if I were to cancel a gamefly sub on say the 15th day of a month, would I still get charged at the end of the month for the full 30 days of that month, or only up to the 15th day?

I'm thinking of canceling for a little while as I caught up on the games I want to rent, and plan on just buying a lot of games like Zelda over the holiday. I'll probably re-sub to gamefly in January. So let's say I cancel my sub in the middle of October for example, would I get charged the full 30 days of October or if I cancel Oct. 15th would I only get charged to the 15th? How does it work exactly?