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<p>[QUOTE=&quot;stevereecy, post: 4829858, member: 19884&quot;]I realize one of the interesting aspects of a box of 20 is the diminishing marginal improvements that you would see with coins in the collection. Here’s an example.</p><p><br /></p><p>Suppose that you started a collection by&nbsp; purchasing coins in the $300 range until the box was full. After the box was full you spent $300 upgrading the coins. Now the coins in the box are $600 coins which, for the sake of conversation, are twice as good as before (or 100% improved) from when they were $300 coins.</p><p><br /></p><p>After the average coin is improved to the $600 range you then upgrade again by spending another $300 per coin. This time though, the additional $300 improvement creates only a 50% increase.</p><p><br /></p><p>As you can see there could even come a point where $300 would be a drop in the bucket and would not significantly “move the needle”. In fact that $300 might not even cover the cost of upgrading if you lost eBay fees every time you upgraded.</p><p><br /></p><p>I guess one way to combat this in the future might be to trade two or even three coins to upgrade just one coin.</p><p><br /></p><p>Just something to think about...a mental exercise.[/QUOTE]</p><p><br /></p>

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