What kills a surplus lot before you even bid
Most surplus lots that look like bargains are traps. Here are the failure modes we have learned to spot from the listing photos alone.
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Buying guide
What an atomic force microscope actually does
An AFM does not use light. It feels the surface with a needle a few atoms wide. Here is how it works, what it is used for, and who buys one.
How we decide what to bid on
Surplus auctions move faster than any person can read them. Here is how we filter thousands of lots down to the few worth bidding on, and where we stop.