The link isn't working. If you have only 1 gecko, I don't see any reason to get a misting system. A crested gecko really just needs to be misted every evening for a nighttime humidity spike which then slowly recedes. Currently I am misting 8 enclosures every evening and 4 enclosures every morning. I use a hand mister that has a latch switch (so I don't have to keep pushing the spray button for each puff, and I can avoid a repetitive stress injury). You can get something like that at a home improvement store.
Aliza