Thank you for the answers,
I know that pricing is hard and that it changes in time.
The actual prices of the cards are not very important to me, I do know how to get a price for a single card, internet is a blessing.
But when I look at "my collection" ther is the number of cards for every category and a price for the total collection per category. In the data base there are a lot of cards wiyhout pricing. the question is: are the cards without a price counted for $0 in the total, so when prices are added to the not-priced cards will the total value of the collection go up. Or is there an average value added to the total for those not-priced cards?
So I only want to know how this site calculates the total collection value.
vrooomed, I know the magazine "Basketball monthly", In Amsterdam and The Hage there is an American Bookstore. A few years ago they sold it there too, and they sold cards too. Since the collecting of cards is not very popular here they stopped selling these items. But prices are on internet as well.