Official announcements from the CPG staff
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Ronbatman Administrator Posts: 2378
10/11/2021
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Obviously, we look at prices all day, every day. We see some sales that appear to be dishonest on eBay. (I'm being nice)
There might be 20 finished auctions for a book and 1 is 30-50% higher than the others in the same condition. We've seen this happen on the same day before. We've seen raw books go for $100 or $200 more than a graded issue in the same condition. Does this kind of information interest you? I'm not sure how we could display or get this information to you but we are thinking about how to be transparent. Somehow tell you that we evaluated the data and statistically this sale doesn't make sense.
If a price guide used all automated data, some unscrupulous sellers could manipulate the market upward. Shill bidding on each other's books until they get the profit margin they want. Then every week report that it's a new high price because it's so hot. That news in turn, drives the price higher.
Think about this, stocks of great companies with huge profit margins rise and fall so why are comics continuing to skyrocket month after month with no decline?
edited by ronbatman on 10/11/2021
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Defiant1 Posts: 720
10/11/2021
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Some sellers may have customers who are loyal and willing to pay more because they know the transaction will have fewer problems. It interests me but I take nothing at face value when it comes to pricing.
Volatility isn't the right word, but it might be worthwhile to give comics a numerical rating based on how consistent the prices are in the market. Something akin to a reliability rating.
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Guest
10/12/2021
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You could use a median sell price taking out the highest and lowest sales and depending on how much trouble it would be the total number of sells.
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comfan Posts: 74
10/12/2021
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You could use a median sell price taking out the highest and lowest sales and depending on how much trouble it would be the total number of sells.
That me timed out.
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kds_comics Posts: 652
10/12/2021
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Defiant1 wrote:
Some sellers may have customers who are loyal and willing to pay more because they know the transaction will have fewer problems. It interests me but I take nothing at face value when it comes to pricing.
Volatility isn't the right word, but it might be worthwhile to give comics a numerical rating based on how consistent the prices are in the market. Something akin to a reliability rating.
There are statistics that I assume CPG uses. More than one standard deviation beyond the mean is usually a number that should be discarded.
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BasementComics Posts: 784
10/12/2021
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I thought CPG discarded the highest and lowest.
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