Well, talking to the mangers at EB/GS they say they can't keep the Wii or DS Lite in stock, but the PS3s are barely moving out the door anymore. The one I went to had 2 PS3s that have been sitting there for a week now. We WILL see a major price drop on the PS3 when the blue-ray drives drop in price, since the blu-ray drive is 90% of the reason for the $600 price tag. I think blu-ray should drop in price around a year from now...possibly 2...that's about how long it took DVD players to drop to a reasonable price.
I hope I'm wrong about PS3 sales slowing by next month, but I doubt it. The system is overpriced and basically plays the exact same games the 360 does. I'd rather have a stand-alone blu-ray player than one built into my game console. I've never watched DVDs on my Xbox or PS2.
I have no interest in a 360, but I will pick up a PS3 when they are priced better. I waited years to get a PS2 (when the slim version came out). I can wait for a slimmed down PS3 with a better price tag.