Right now you can use the Free BETA version linked on the top of the site. In the future you would have to purchase it, but any pages you create with the BETA will continue to function properly, so take advantage of it now.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.