You can download all these stuff free. Basically these actions can use to manipulate faces. But you can also try them on a different kind of photos.
Photoshop actions help you to done more tough and difficult Photoshop works by a single click. You can install them on your Photoshop installation as you install brushes.
Here are some most common and valuable Photoshop actions which are help you to getting done your artwork in a attractive way.