WTB: USED Lab Grade Microscope

[Domboski]

I'm trying to find a good deal on a lab grade microscope that has at least 100x magnification but prefer up to 1000x. Also an option to connect to a computer via USB.

If you know of any good places to look besides the obvious (Ebay, Craislist) or have one you can sell, please let me know.

Thanks!