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This "Standard Reference" peanut butter is >$2,000
(archive.ph)
This is for strictly mildly interesting material. If it's too interesting, it doesn't belong. If it's not interesting, it doesn't belong.
This is obviously an objective criteria, so the mods are always right. Or maybe mildly right? Ahh.. what do we know?
Just post some stuff and don't spam.
In addition to what others have said there is an interesting video from Veratasium about that NIST department, they have a wild variety of items.