Well for starter you don't need a critter keeper to or even a 10gallon to keep your frog in you can keep him in a regular plastic bin from walmart. This actually has some advantages such as humidity control, one of the problems that terrariums have is that the screen tops don't hold in humidity. If you get a 10 gallon you should get some sort of non-screen cover such as a glass or plastic top careful with the plastic top though they might melt, I made one of my own I cut a piece of glass I bought from home depot for only about $10 and its really not that hard to do. and as for a mister you don't need anything special just a regular run of the mill spray bottle. As for where to get your frog you should def buy one locally most online frogs you will pay more than $60 for no matter what just because overnight shipping is a must. Chances are if you get a cranwelli it will lose its color as it reaches maturity and end up a mottled brown. If you want a frog that holds its color well into adulthood you need to get a Ornata or "Fantasy frog" which is a hybrid cross between Cornuta and Cranwelli but they hold bright colors and patterns into adulthood. I recommend you just go with a simple Cranwelli you can get for no more than $15 from a local pet store just make sure he is healthy. Once you get a little more experienced with the less expensive frog and you find out if its truly you then you can make the commitment to buy a more expensive frog. Most of all I advice you to read as MUCH literature and old posts in this forum as you can you will find a wealth of information and it will make you a MUCH better owner. Never be afraid to ask though I never was and I think I turned out to be a pretty good frog care taker hehe!