Mistewoods has it just right. If you sell it, make sure it is for local pickup only and document your process all the way through with pictures.
- If you can get a video clip of the machine running, do so.
- Make sure to list everything that will be selling with it, preferably with pictures.
- Make sure to say it is as-is in any advertising you do.
- Be ready to show it to a lot of people, if you want to get your best money from it.
- Mistewoods has the pricing in the right neighborhood, as well, but figure out what you need to get out of it as a minimum, and don't sell it for less than that, then list what you think you can get out of it and use that as a starting point.
- If you don't like a deal, cancel it.
- Don't let the buyer change things on you, there are a lot of folks who do that sort of thing. (None from here though, I'm quite sure.

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- The classifieds here are a great place to start, but make sure to read the rules.
Do yourself a favor and look at how much profit you would make in the next year, assuming things go as they have been; if that amount is less than you think you would earn by selling, then you probably shouldn't sell.
This does not account for opportunity costs or overhead, or repairs, or other potential expenses, just gives you a simple idea and comparison of your options.
Have fun!