Love it when everything is kept too confusing to keep track of. The 60 gig is discontinued, dropped to $500, the 80 gig is here at $600, and this leaves the 20 Gig version overstocked and unloved.
If anyone is interested, Gamestop has it at a downright bargain.
$450 gets you the PS3 core version, along with a rebate form good for 5 free Blu-Ray DVDs. That's actually a pretty reasonable deal, even just for a Blu-Ray player. $500 gets the 60 Gig version with the same DVD deal.
EDIT: A link would be helpful, eh? It's added now.