Do you want to get earn the required 20 CPEs for FREE? If so, then you came to the right place. You don't have to pay a cent but you do have to spend time listening to the free webcasts provided by a couple of InfoSec magazine sites. You also might need to answer a few questions to earn the CPEs.
Here's a few sites with free webcasts where you can earn CPEs. Most of the webcasts are about an hour and 1 CPE is provided once you pass a quiz.
Information Security Magazine - US site: http://www.infosecurity-us.com/webinars/
Information Security Magazine - UK site: http://www.infosecurity-magazine.com/webinars/
SC Magazine - US site: http://www.scmagazineus.com/vendor-webcasts/section/145/
The webcasts are informative and the CPEs for most of them can be used for ISC2 and ISACA. Please make sure to keep a copy of your CPE certificates just in case you get audited for the event.