They are not difficult if you are at all mechanical, kits run around $30-$40 each. Keeping parts organized between primary and secondary sides is the key. I can do a proper job for you but I am down in Parker, I assume there are people closer to you.
If you decide you want to try to do it yourself, I will spend a little time on the phone to kind of walk you through it. I have the 5 gallon can of carb dip, but don't advise buying that if you are only doing a couple of them.