I sold a couple Schragers on FakeBook with no issues and one on eBay for $300 more than I had it listed on FakeBook. Still ways to sell out there, just have to wade through the 4.5 million scammers, fake profile idiots out there!!
I have the slug doctor and just use standard hole reinforcements. The last application has been on my table for years and no issues. I have used a small shop vac and also a couple of the Roomba type robot vacuums and no issues at all.