you can buy it at the online stores, but you'll have to pay shipping... which will then make it really expensive stuff... Just go to the LFS and ask for it. Usually, it isn't in the display, since well... its not super attractive. They'll pull it out of one of their sumps and charge you a few bucks.
you should be able to get it from someone in your local reef club. that's where I got mine. Your LFS should have it also. You can check the trading and selling livestock forum and I'm sure there are people in there selling it also.
http://www.reefcleaners.org right in your home state of florida. John Malony who runs the business is a great guy to work with and it is really cheap there. You may even find that the shipping, seeing as you are instate, is entirely affordable.