eBay-touted PowerSellers exposed as shills

Discussion in 'Coin Chat' started by PhilipCohen, Nov 16, 2009.

  1. Ripley

    Ripley Senior Member

    Heck even Heritage uses shills. Traci
     
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  3. rlm's cents

    rlm's cents Numismatist

    I have zero idea what agenda you think I have save thinking logically.

    I reloaded you spreadsheet. There are a total of 15 data points in the column labeled "bid activity with this seller". Out of 17,000 items, that cannot be rampant anything even if all are shill bidding. Oh, and hitting the "sort bidders X seller" button did nothing noticeable.

    Either you need to load the spreadsheet you are talking about or present some facts I can understand.
     
  4. desertgem

    desertgem Senior Errer Collecktor Supporter


    You did the same thing on the previous thread. When people try to give an opinion, that differs from your opinion, you claim they have an agenda. Actually it is you that seems to have an agenda against ebay. Stick with the newspaper or throw-aways or whatever, as they don't disagree with you, they just quote you.

    That one disagrees with you isn't because they have an agenda or is a professional seller, it is because they feel you are not presenting a good case. Ebay is not a required buying grounds, so stick with fixed prices stores if you disagree with their actions.

    Jim
     
  5. coleguy

    coleguy Coin Collector

    Every auction house I've ever heard of uses them as well, and it's common practice that every knowledgeable bidder is well aware of and accepts. The problem is some people just expect a raving good deal on every single thing, even at the seller's expense, on Ebay, and so find any little thing to base an argument on, even when they have to know they're wrong. Even with "shill bidding" a bidder has a much better chance of getting an item cheaper than if the seller had posted the item at a set price. Why complain?
    Guy~
     
  6. PhilipCohen

    PhilipCohen Junior Member

    I did not include the 30-Day Summary information from the individual eBay Bid History Details pages because it only covers 30 days (why not 90 days?) and there was simply too much work involved and, anyway, those statistics may only expose a suggestion of naive shill bidding; they will not expose “sophisticated” shill bidding!

    The whole idea of the multiple auction analysis in the spreadsheet, over a longer period of time than 30 days, is to expose the number of common bidders regularly bidding on some sellers’ auctions. If you cannot see all those common bidders on those sellers, that I would suggest are shill bidding, so be it.

    Clearly, nothing I can say will convince you. Maybe some other reader can try to explain to you why anyone could come to the same conclusions that I do from the facts presented in the spreadsheet.
     
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