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<p>[QUOTE=&quot;-jeffB, post: 4994793, member: 27832&quot;]I think I get your point, but this still <i>reads</i> like a textbook illustration of &quot;begging the question&quot;. If you can sell the coins for $X on eBay, then <i>they ARE worth $X, because you can get that for them on eBay</i>.</p><p><br /></p><p>What you mean, I assume, is that markets <i>composed entirely of knowledgeable buyers and sellers</i> determine the true worth of a coin, and we should ignore eBay because the buyers there don&#039;t know what they&#039;re doing. But that begs the definition of &quot;knowledgeable&quot;, or else cherry-picking wouldn&#039;t exist. It also assumes that everybody in those other markets is <i>rational</i>, and I&#039;m not sure that&#039;s a reasonable assumption. (For example, I don&#039;t know how it accounts for buyers like &quot;Clio&quot; in the ancients realm -- a person or business with apparently bottomless pockets.)[/QUOTE]</p><p><br /></p>

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