I realize you want to save the cost of the commission, and selling your home without representation is certainly an option. Let me ask you, if you were facing an IRS audit, would you bring along your CPA? If you were sued, would you forgo hiring an attorney?
The reason I ask this is not to scare you. Truthfully, all homes are sold "by owner". The difference is, you are selling "without representation". After you sell your home, are you planning to buy another? Will you be using a Realtor? Why?
Because we're free and you want to negotiate the best price, right? Over 90% of the time, buyers use a Realtor to find their home. So I am curious...if that is true, then why would someone exclude 90% of the potential buyers for their home?
I realize that you may have good reasons to try it on your own. I suggest talking with some Realtors and challenge them to prove that they can really help you, as opposed to simply charging you a lot of money for something you can do yourself. If they cannot prove to you that you would benefit, then go for it.
I would ask them a couple of questions:
1. Tell them why you want to sell, and where you want to go. Can they help you achieve that goal, and how?
2. Tell them how much you want to net from the house, and if you do not receive your net, what your plan is. Ask them if they can provide you with an estimate of net proceeds and what they can do to maximize your profit?
3. Ask them why they charge what they do, to show you exactly what they do to bring you the best offer. Then ask them if they can sell your home for a discounted commission. Listen, watch, and learn.