the value of cards

Do you think that a cards value goes up and down on a daily basis based on that day's performance of the athlete?
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The next few hours and next couple of days, you saw posts everywhere for people looking
for his cards. But now you don't. Just like if the player dies, the next thing you see are
people bidding hugh amounts on his cards. If the media makes noise about a player, then
usually there cards go up.
1) With innovations such as thePit.com, cards certainly can and do fluctuate in price due to daily events. It may also (subtly or drastically) affect going prices on auctions (eBay, Amazon, Yahoo, etc.).
2) jbugs - as far as I know, Beckett does not "set" prices. It takes in a wide sample of market information on what dealers can sell individual cards for in the retail market (as in a shop versus a card show or auction), finds a good "average" of sorts, and puts that info in the price guide. Beckett does not set the market; it merely reflects it. And with serial-numbered cards, finding a card numbered to 50 a few years ago meant more than finding a card numbered to 25 does now simply because there's a greater supply of serial-numbered cards on the market today.
Yes, I collect shiny modern crap
All your Shaq are belong to me
Even the drop in the Beckett can immediately get some collectors itchy to sell their cards. In that respect Beckett does not reflect but actually projects the market. Whether this is by intention or not is a matter of opinion...