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geekhack Marketplace => Great Finds => Topic started by: Shawn Stanford on Tue, 16 November 2010, 06:34:50

Title: Comptekw2k IBM Space Saving Mini NIB
Post by: Shawn Stanford on Tue, 16 November 2010, 06:34:50: How many of these is he supposed to have?
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: Half-Saint on Tue, 16 November 2010, 06:59:41: A truckload, at least...
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: Parak on Tue, 16 November 2010, 07:42:33: Quote from: Half-Saint;247428
A truckload, at least...

Based on the pricing, as well as the supply/demand curves, I have been able to precisely determine what truck it is.

(http://imgur.com/IKs3x.jpg)
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: J888www on Sun, 21 November 2010, 06:04:05: I'll stake a pawful of bananas that this will break the $300 mark.
2 hours to go.
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: MissileMike on Sun, 21 November 2010, 09:14:02: 306$

Minis are officially made of gold.
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: keyboardlover on Sun, 21 November 2010, 09:16:14: And people think Topres are expensive! Thank goodness I prefer them to buckling springs!
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: keyboardlover on Sun, 21 November 2010, 10:26:19: I've been using ebay for 10+years and I've never encountered so called 'shill bidding'. Methinks it's a myth?
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: TexasFlood on Sun, 21 November 2010, 11:09:47: Quote from: ripster;250118
It doesn't really work as a strategy is the reason but is a favorite cry of the losers.
How do we know it doesn't work? But even if it does, how would you detect it? I caught a bit of "Auction Hunters" on TV the other day, a show I'd never seen before. They were auctioning off the contents of storage sheds. There was a bidder outbidding everyone so discouraging the rest from bidding. One of the sellers bidding to drive up the price supposedly in an attempt to drain his resources to encourage bidding. Of course as a convenient side effect they made a big profit. I fail to see how this is any different than ebay and why someone couldn't get away with it.
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: TexasFlood on Sun, 21 November 2010, 11:20:43: Quote from: ripster;250118
It doesn't really work as a strategy is the reason but is a favorite cry of the losers.
How do we know it doesn't work? But even if it does, how would you detect it? I caught a bit of "Auction Hunters" on TV the other day, a show I'd never seen before. They were auctioning off the contents of storage sheds. There was a bidder outbidding everyone so discouraging the rest from bidding. One of the sellers bidding to drive up the price supposedly in an attempt to drain his resources to encourage bidding. The risk of course was if the seller bidding won they would lose any profit and forfeit whatever % might be owed to other parties involved. In this case it worked and as a convenient side effect they made a big extra profit. I fail to see how this is any different than ebay and why someone couldn't get away with it.
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: TexasFlood on Sun, 21 November 2010, 11:24:13: Quote from: ripster;250118
It doesn't really work as a strategy is the reason but is a favorite cry of the losers.

How do we know it doesn't work?

But even if it does, how would you detect it?

I caught a bit of "Auction Hunters" on TV the other day, a show I'd never seen before. They were auctioning off the contents of storage sheds. There was a bidder outbidding everyone so discouraging the rest from bidding. One of the sellers bid against him to drive up the price, supposedly in an attempt to drain his resources to encourage bidding. The risk of course was if the seller bidding won they would lose any profit and forfeit whatever % might be owed to other parties involved. In this case the seller quit at the right time and it worked. As a convenient side effect they made a big extra profit.

I fail to see how this is any different than ebay and why someone couldn't get away with it.
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: TexasFlood on Sun, 21 November 2010, 12:11:47: Quote from: ripster;250141
Economics. See Game Theory.

You might get away with it on a rare basis but clearly Comptek2wk hasn't been doing that and accusing him of doing so is tainting one of the most reliable keyboard sellers on Ebay.

Is there anything in particular you'd like to cite in Game Theory which states shill bidding doesn't work?

As for Comptek2wk, I don't know enough about ebay to know what to look for to find shill bidding, or if you can even tell. I have no reason to accuse Comptek2wk of anything and am not.

However shill bidding is seemingly a time proven practice and see no reason what is to prevent someone from using it on ebay.
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: keyboardlover on Sun, 21 November 2010, 12:21:38: Shill bidding is a stupid self-defeating tactic to use. It goes against the logic of ebay which is that it's not about what sellers think their item is worth so much as what bidders think an item is worth. Bidders will only bid what they want to bid. So if the bidding goes too high, they won't bid!
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: kill will on Sun, 21 November 2010, 12:22:56: I think John Nash would certainly approve of this new character who has arrived claiming they are buying all the NIB and re-selling them for $1000 to the JAPANESE. So we have figured out its not the Russians....hmmmmmmmmmmm

MAYBE he is secretly creating a duopoly with comptek to drive the price of NIB's through to the $2,000 level.
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: TexasFlood on Sun, 21 November 2010, 12:58:36: Quote from: ripster;250156
Nothing prevents you from using it. It just isn't efficient so it is very rare and fairly easy to spot.
I would agree that repeated, chronic shill bidding results in various patterns which could be spotted. It's all a matter of degree. If one didn't get greedy then the main risk would be outbidding the real bidders.

Quote from: ripster;250156
Just do searches for "shill bidding" and read up on it.
Did so already. Got hits both on how to spot it and how it can be effective.

Quote from: ripster;250156
Show Image
(http://www.mikeonads.com/wp-content/uploads/2007/05/supply_demand_11.JPG)
Can't argue that the basic economics of supply & demand are more powerful forces here than any shill bidding that might be going on. A shill can attempt to fully extract a bidders reserve but not create bidder demand for an item or restrict supply. Well most bidders can't, if you could then you'd have a monopoly!

Quote from: ripster;250156
Game Theory Source
I probably heard more about game theory in that one movie that I had before watching it. Game theory had been around long before John Nash although he did contribute to it a lot, and the movie to my awareness of it.
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: TexasFlood on Sun, 21 November 2010, 13:06:35: Quote from: ripster;250176
It's not paranoia if they really are out to get you.

Goes without saying that just because you're called paranoid doesn't mean they aren't after you.
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: TexasFlood on Sun, 21 November 2010, 13:16:33: Quote from: ripster;250183
Your move.
Show Image
(http://static.howstuffworks.com/gif/game-theory-8.gif)

Try Hex (http://www.boardspace.net/english/about_hex.html). After all, John Nash was one of the game's inventors.
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: TexasFlood on Sun, 21 November 2010, 13:40:39: Quote from: ripster;250183
Your move.

Your move.
(http://static.howstuffworks.com/gif/game-theory-7.gif)

Try Hex (http://www.boardspace.net/english/about_hex.html). After all, John Nash was one of the game's inventors.
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: woody on Sun, 21 November 2010, 14:49:27: You could play Life on that beautiful board.
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: TexasFlood on Sun, 21 November 2010, 15:21:39: Quote from: ripster;250195
I can play that with my Go board. Too bad my kid and I never got into Go. Damn computer games.

Supposedly John Nash developed Hex on a Princeton bathroom floor.
(http://www.katyelliott.com/blog/uploaded_images/3-28-08bathroom1_at-707933.jpg)(http://1.bp.blogspot.com/_72cqaO4N3ME/S1T6haSJvsI/AAAAAAAAAyU/zGiwncTWAJM/s400/ceramic.jpg)
Title: Comptekw2k IBM Space Saving Mini NIB
Post by: didjamatic on Sun, 21 November 2010, 15:25:58: I first learned about Go when the movie Pi came out. I've been meaning to get a board and stones ever since but haven't yet.