Well, their website is takes a few minutes to figure out, but it looks like you'll need to buy the bags and the mounting kit, which is $519.98 MSRP. For a few dollars more, you're now getting close to hard bags...like
www.tsukayu.com. If your bike is black (hope not :mrgreen

, then you could get the Tsukayu Strongs for $579 shipped, and sometimes even cheaper than that. Otherwise, you could get the primered for $499 or cheaper and have them painted to match. Just an idea...
Did you buy your California bags directly from them?
Do you have pictures of the bags on your bike? You could try to sell the ones you have before purchasing the new ones.