ComicsPriceGuide.com Forums - CPG Announcements - Question about dishonesty in the market - Messages https://comicspriceguide.com/forum/messages.aspx?TopicID=16552 ComicsPriceGuide.com Forums - CPG Announcements - Question about dishonesty in the market - Messages en-us http://blogs.law.harvard.edu/tech/rss Jitbit AspNetForum Tue, 12 Oct 2021 20:41:39 GMT Tue, 12 Oct 2021 20:41:39 GMT https://comicspriceguide.com/forum/messages.aspx?TopicID=16552 Message from BasementComics Tue, 12 Oct 2021 20:41:39 GMT https://comicspriceguide.com/forum/messages.aspx?TopicID=16552 Message from kds_comics 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.]]> Tue, 12 Oct 2021 14:16:31 GMT https://comicspriceguide.com/forum/messages.aspx?TopicID=16552 Message from comfan 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.]]> Tue, 12 Oct 2021 01:11:26 GMT https://comicspriceguide.com/forum/messages.aspx?TopicID=16552 Message from Tue, 12 Oct 2021 01:10:03 GMT https://comicspriceguide.com/forum/messages.aspx?TopicID=16552 Message from Defiant1
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.]]> Mon, 11 Oct 2021 18:26:44 GMT https://comicspriceguide.com/forum/messages.aspx?TopicID=16552 Message from Ronbatman
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]]> Mon, 11 Oct 2021 16:46:08 GMT