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Hey, I think I finally figured out the price guide! (algorithm enclosed)

The price guide has from day one, irritated me. I know... that's a personal problem. image

But - I went through a sampling of 20 real-life "buys" and factored them against the price guide.

Result: 0.516241247

Ergo - IF the theory holds, then this coin: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1381075385

should sell for: $65 * 0.516241247 = $33.56

Obviously your mileage may vary. Please note that no animals were killed or harmed in any way during the posting
of this message.
image

Comments

  • Would the mysterious "DanC" factor apply equally to autcion items with and without photos of the coin in question?
    Buy the coin...but be sure to pay for it.
  • Hmmm....

    Great question - and yes, in fact I did balance the two.

    I'm probably 'up in the night' on this thing, but I thought it'd be fun to see what happened.
    If we can figure out an accurate multiplier, then they could just plug it into their chart! image

    or - We can load the chart into a spreadsheet and just run a macro....
  • RussRuss Posts: 48,514 ✭✭✭
    So, Dan, what would a non SMS 1965 business strike Kennedy graded MS66 go for? It's listed in the price guide at $62. Or, how about a 1971 in PR69CAM? It's listed in the price guide at $90.

    image

    Russ, NCNE
  • DHeathDHeath Posts: 8,472 ✭✭✭
    Russ, that's not fair.image
    Developing theory is what we are meant to do as academic researchers
    and it sets us apart from practitioners and consultants. Gregor


  • << <i>Obviously your mileage may vary >>



    Leave it to Russ... imageimage
  • PlacidPlacid Posts: 11,299 ✭✭✭
    I am so confused image
  • robertprrobertpr Posts: 6,862 ✭✭✭


    << <i> So, Dan, what would a non SMS 1965 business strike Kennedy graded MS66 go for? It's listed in the price guide at $62. Or, how about a 1971 in PR69CAM? It's listed in the price guide at $90. >>



    Russ, the '65 BS (business strike image) Kennedy would go for $32.01, and the 71 in PR69DCAM (pcgs, of course) would go for $46.46.
    If you've been paying more, obviously you've been getting ripped off! imageimage
  • Actually... the multiplier is only as good as the source data.

    Russ - you of all people should know GIGO. image

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