Has anyone ever considered eliminating prices and instead focusing on supply/demand on this site with an idea of arriving at a value of the card independent of info on other sites/overall marketplaceon? Right now there is already data for cards showing how many users have a card on want list and how many have it listed for sale/trade (or perhaps "unwanted" might be more appropriate). That provides perhaps the most relevant info of all - everyone always says value is all about supply/demand (I can imagine someone could also figure out a way to incorporate how many people have card on site into the demand and supply factors by using some stats/math, but Im lacking in that category). If people putting cards on sale/trade list also indicated a price they considered value for trade or sale, or by not putting anything and implying at least the card is not worth the time for them to do so, there could also be a blanket floor value in such circumstances(. Links to other sites for a particular card with searches could just be there for people to easily access info from other sites if they wanted to use that info for some reason - COMC wouid never give it's sales data that it gives to paid subscribers but I could see it being perfectly fine and see potential advantages of allowing a link that could access what a particular card is being put up for sale on it, which is available to everyone for free. Personally, I think it very well could be better with no links, but not that important
How to do the math and coding for this is outside what I know, and on that basis I should maybe shut up altogether, but I would be interested if anyone has ever contemplated anything along these lines and ways to do it, eg, only use info from site, focus on a value of a card on this site using wantlist/trade/sale data, maybe not even have anything for values equated to an actual price other than what users have inputted themselves as value they would buy/sell cars for.
I just think it is preferable and better to not use market data from other sources as it will just end up being comparing apples, oranges, zucchini, bacon, humus - different sites have different business models in how they profit off transactions baked into prices, so the more info from those sites actually creates more things to figure out, points of disagreement, and are problematic in arriving at some market average; Data from all sites will always be incomplete and not represent overall market, so why not just try and focus on the market on this site if there is data on site available to use in a helpful, but not perfect way, and that can be added onto more to make better.
Problems on other sites can also infect this site without the ability to know or do anything about. If there are pints of disagreement with site's method, it's better to at least have one thing to work off from resolving disagreement instead of using different sites and then not even having a common place to start from to find resolution.
Therw may also be an in issue as to how values are used and matter to traders vs buyers - with trading it seems the value is important to arriving at 0, so any method works even if crazy so long as it applies to both sides and results in 0; buying or selling involves something that doesn't really allow for that and one side won't it shouldn't accept it.
I'm a buyer who is just interested in building collection - I can see how the difference in value can occur by some using eBay sales whereas I would prefer, if anything, use comc because that is where I would otherwise go for the cards. I've seen differences between my limit and their limits that are more or less bridged by gap of fees for listing on comc but it wasn't clear whether or how person was using comc so I didn't understand how I could even try to bridge gap and it seemed like better use of time on both sides to just say didn't look like we could come to deal. I've had someone take a range for cards taken from eBay prices and use the low, and I couldn't quite grasp how or why person wouldnt use the low as the starting off point followed by reduction in fees associated with going on eBay and then using that as number to give me for a price in deal (and even that would be a compromise for me because listing on eBay probably wouldn't even result in sale and the time it would take to scan the cards and everything else involved - giving I'm only unreasonable in how reasonable I am, I would have made that compromise). As a buyer, if I wanted to use eBay to determine values, I would just go to eBay and buy the cards there (same with comc). Nobody has actually used the value of card listed in this site interestingly. Obviously, not being able to reach deal is going to happen and I'm just ranting a little, it's something that if it happens a lot to people they are probably going to turn away from site because of resulting time spent with minimal or no results; people will get upset at one another eventually if they end up spending a lot of time trying to work out deal but come up short.
In any event, I think the site could not only match and connect people in wanting/having particular cards, which the site does incredibly well and is unique in that regard, but it could also connect people who place similar value on those cards. At least getting a bit closer to getting people connected with similar valuations before any offer or proposal is even made would create exponential benefits in reducing time spent on deals that end up not being completed.