Ebay Sellers That Obviously Have Never Traded Stocks.

Market value is a tough thing to determine on any coin.

You'd think that having the same coin in the same plastic in the same grade would make it easy to determine a price, and you'd be wrong thinking that.

Recently I learned automated data analysis and visualization and was looking to test the skills out for fun so I went to coins.

So I pulled all the ebay sales data for the Ike series.

Limited myself to just PCGS coins and then broke them down by year, mint, and grade and accumulated all the prices and transaction dates.

The data is all over the place though, here is a typical example.





You'd think it would show you a good price, but it doesn't show you a price, it shows you the range of prices or volatility of prices for the 'same' coin on ebay.

What people pay for a coin is the market and people are irrational for the most part so I guess it is normal that the prices would be all over the place like this.

Really shows there are some savvy eBayers out there and some not so savvy.

I still liked my data though as it did show the bottom end of a range so you can move on a coin knowing you are getting a better than average deal on that coin.

Interestingly enough, the Ikes on average went down in price over April, May, and June despite the underlying metal Silver going up during that same time period.