If you don't mind spending a couple hundred bucks, and want a custom-made weapon, try
www.swordstore.com (
www.nosyuiaido.com). I got one from them that is truly a wonder to work with--balanced for me, and fits to my hand. Also has the menuki, saya, and all the furniture customized. Cost me about $650, three years ago.
They also have "entry level" swords that are less customized, but are well made.
There are a couple of places out there that will sell decent iaito for about $200-$350, depending on what you are looking for. I would actually recommend spending the money, if you can, to get one made to your specs. It will help your training quite a bit when you are not "fighting" your weapon......remember, it is your *partner*...
You can also look into some of the local pawnshops, oddly enough, or even the gun shows sometimes. From time to time, people are selling old WWII era blades, and those might be worth your time.
If all else fails, your local cutlery store might have some of the replica blades. These are really blade heavy, and have no "soul", but if you have nothing else, they might do. However, for the price you're going to pay for one, you could do better. Use them as a last resort.
Hey, if all else fails, drop me a line.....I have a few links I can post for you, but I have to get 'em from home...
Peace--