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Re:Plastc will cease operations and will not fulfill any pre... by slededit on Thursday April 20, 2017 @08:37PM (#14162152)
They go for about $10k-$30k on EBay. But people have also DIY'd their own: http://makezine.com/2011/03/24/diy-scanning-electron-microsc...
Re:Plastc will cease operations and will not fulfill any pre... by bigiain on Thursday April 20, 2017 @09:09PM (#14162297)
Or free - if you're in the right place at the right time (and have the right reputation and friends...):

https://tinkerings.org/2015/11/15/in-which-i-acquire-a-scann...