Good morning, Seattle.
A few questions for you ---- what was your wife intending to accomplish with a cutter? When you say it's "too much" are you referring to the overall size? What made you believe your spouse was requiring a cutter at all?
Also, there is a section of these Forums dedicated to Buy, Sell, and Trade which would be the logical place to post your offer.
Beyond that, try Facebook/Meta marketplace (or Craigslist, if you dare) and make sure the price is right. There are SC2 machines as low as $340 from the USCUTTER warehouse, so your offer to sell should be less than that. I'm thinking around $250 is in the ballpark.
You don't mention here, but when advertising, don't forget to mention it comes with a fresh (Unregistered) copy of VinylMasterCUT.
I will say one more thing. When someone comes to look at it to buy, they'll want to see it working, not just sitting there with a zip-tie (anyone can zip-tie a broken/malfunctioning unit and say it's 'new' ). In order to provide a live-action demonstration, download and install SignBlazer Elements and choose LiYu as the cutter model, which will get the cutter to respond.
Good luck.