You did a good job cleaning it up.
Just noting that it does not have a bill validator so the value is likely less than one with.
Depending on where you live you may make more selling it locally where there are less comparatives.
Ie Newspaper, Penny saver, Coffee shop bulletin board vs Ebay/Craigslist/FB
Here in Western Canada - I have been offered $1800 for my S+ as you can't find slots of any kind here.
If you go to Ebay the shipping will be $500+ to get it up to Canada - if you can even find a seller that will even crate and ship internationally.
Even shipping from Wayne in Toronto (eastern Canada) will be a pretty penny.
This is on top of whatever you pay for the slot.
If you live in Ohio you can find a dozen slots stores in a 4 block radius and they can go for less than $300 depending on how clean they are.