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Ah, well, you may have a point there. I mostly just use them for the minerals section of the Natural History Museum. Perhaps they are a biased source as well.

Ultimately, much like the current market cap of cryptocurrencies, the "market cap" of tulips was probably grossly overexaggerated by ignoring the effects of the order book vs. peak price:

https://steemit.com/taxes/@lexiconical/valuing-steem-rewards-as-taxable-income-is-a-vast-overstatement-of-tax-liability-part-2-the-thin-order-book-and-flash-crashes