I bought my steamer from Sears. It was less than $40.
It works great and I use it for all my gumpaste flowers or anything I need to steam.
If the goal is "shiny" fondant, or just getting rid of powdered sugar/dry appearance, use some shortening on your hand and rub it in. If you only use a little, it will not be too shiny. If you want a more shiny appearance, use more. I have also stopped using powdered sugar to roll fondant, because it tends to dry out the fondant, and discolor. Instead I use a thin film of shortening on counter, which not only works better as "anti-stick", but does not dry it out. Shortening is also a great cure for fondant "elephant skin." I have never used a steamer and was glad to find this thread! Thanks for your question!