Jeepers $129.99 for the chicklet. We bought ours last year (2x) and they worked wonderfully until we invited 50 boyscouts who had the urge to "touch" the chickletsss. This was unfortunate due to static electricity fried the components. So if you decide to go this route, I HIGHLY, HIGHLY, recommend that you create some sort of covering for the chicket that is removable in order to re program them. Here's a guide that one of our teammates used last year.
Here
Enjoy!
~Fondy Fire