A lot depends on how complicated the real estate laws are regarding closing in MI. Here in FL, the "Title Companies" do most of the work. In someplace like NJ, it's done differently, and it can be tricky. I don't know MI.
Given one point - a "good" (emphasize that) real estate agent can facilitate the sale by better exposure of your home through the Multiple Listing System, which enables other agents to see and sell your home - otherwise you can do it yourself.
If you have a decent location, meaning reasonable traffic nearby, you can put up signs and generate "looking" traffic. Of course, there's the newspaper ads, and also For Sale By Owner websites. I'd try the signs and your own newspaper ads yourself, first. I'd recommend finding a good real estate attorney. That is, one specializing in real estate; perhaps more expensive per hour than a "general" attorney, but will need fewer hours. He/she can protect your interests and advise you along the way. Probably all attorney fees, including closing, will probably be less than $1,000., and probably closer to $750. A far cry from the 6% an agent will charge (and, without the same level of protection/service). It will be the cheapest $750. you'll ever spend. Often, it's a good idea to have an attorney even with an agent, depending on the experience and diligence of the agent, though that's more from the buyer's side than anything else.
Many of the other issues are the buyer's problem: mortgage, inspections and title insurance. You'll need the attorney to deal with some of their nonsense and technicalities unless you are quite experienced, and even then one can be surprised. One of the most important things to watch is the overall contract (Purchase and sale agreement). You need deadlines/milestones for a mortgage commitment from the buyer, times for inspection, and the terms of breaking the contract depending on what the inspection turns up. It is NOT as simple as writing that one agrees to uy and the other sell on a piece of paper - see an attorney.
Bottom line, yes you can do it yourself with the right resources, and save thousands.