An electron microscope? Cheapest one is about $60,000 but if you want a used one you can get it as low at $10,000, a real bargain I guess.
http://www.labx.com/v2/adsearch/detail3.…
http://www.labx.com/v2/adsearch/detail3.…
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I'm pretty sure they sell them on amazon...or go to a random department store and they have kid microscopes, I remember buying one in 3rd grade from Big Lots. it had 100X magnification
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In a scientific material shop.
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Ebay?