Thinking of Building a Graded Card Pricing Tool...

DataDriven05

I work in software development (Database Architecture) and a friend of mine at work turned me onto the fact that EBay sponsors a developers program.

http://developer.ebay.com/programs/marketdata

I won't bore you with the technical nonsense (you can get that from the above link if you wish), but EBay goes a long way with what they offer in terms of options for anyone who wants to build a system based on their data. For example, they catagorical data feeds, of completed auction data, that is as current as 1 day old. Anyway, a few of us are thinking of taking a stab at putting an online application together to support collectors/investors/sellers of graded sports cards.

I think you guys are the perfect crowd to ask what you like to see in an application of this nature. I know Beckett already has one, but I find it to be quite lacking. I won't lead you with what I think is missing from that site or others of it's type, but would rather hear what you think first - I will throw my 2 cents as the thread progresses. Think features and usability.

Can't wait to hear what you guys think...

Chris

Southerncards

There used to be a "Graded card price guide" but that went the way of cheap wax.

Bosox1976

Other than just average sale prices:

sample size (ie. how many PSA 8 1975 Topps George Brett's are considered in the average sales price for that card)

a trend arrow (up/down),

a magic filter that can weed out the misleading auction titles from the actual cards (ie. PSA 9 Gretzky RC auction title leads to an obviously fake or ungraded RC, or a PSA 9 oc Gretzky, or a PRO 9 gretzky, etc. - involves actually reading some auctions - maybe just on key/expensive cards?),

the ability to sort by card/set rather than auction title,

Hyperlinks to completed auctions

and some way to do something with large lots of cards (ie Lot of 25 PSA 8 1972 Topps Baseball cards).

Good idea, as always the devil is in the details, hope it helps, and is better than the Andale research feature.

~Mike

stormsurge

Very interesting. Please take a look at the PM i sent you.

ndleo

Is there way to use to the data in order to predict card prices? Card prices are just a function of variables. The most difficult variable to quantify would be "desirability", one man's gold is another's garbage.