you need to get with a person who has a outfit before you invest in it... I got one last year thinking I would enjoy it but it wasnt what I thought it would be.
are you fishing for bass or panfish? there are different size rods for the different size lures and lines you throw... bass require an 7-9wt and about 8 to 9ft in length. They also require you to get new line from whatever comes with it, and its like 60 to 80 bucks. Bass plugs are heavier than the regular flys you may throw.
The bass pro shop in Clarksville, IN has a full fly shop and the guys will demo the product for you... the cheapest outfit there is like 80 bucks.
I dont want to discourage you from trying, but its very labor intensive and not anything like using a normal rod/reel and is better for someone who isnt on a budget.