You can wait for an exo terra if you want, it is the easiest option to set up, otherwise, the cheapest and fastest way to get up and running, check your local craigslist for people practically giving away their old leaking 55 gallon fish tank, then do a conversion. as long as you dont plan on a water feature the tank doesnt need to be water tight. just a soaking bowl you clean daily for the frogs to take their wake-up bath in. And you dont need to get super creative with your interior for happy frogs, give them leaves and stuff to hide behind/sleep on either fake vines or real potted plants, Pothos is great for beginners because Red eyes love them and it drinks weed killers for breakfast (I mean that it is very hard to kill, dont actually take weed killer to it). And you can get it anywhere.
Here is Lynn's setup, just a few things siliconed on the glass to hold plant pots, plants are mostly Pothos from the looks of it, or use fake vines from fish shop, easy to clean paper towel bottom, dishes for water, use glass bowls for crickets (bowl feeding rather than just setting the crickets loose in the tank) Easy to use and maintain setup.
http://www.frogforum.net/members/fly...y-18-2012.html
I dont know where you live, but a quick search brought up this one
55 gallon fish tank