I went to the mall near my job, they have an EB Games there.
I asked about PS3 sales since the price drop. The attendant kinda laughed, and said it hasn't changed a thing, sales were still slow in their store.
He went on to tell me that the 20gb at $500 barely sold, and that when the 80gb arrives at $599, it'll be the same situation.
On a side note, I have a feeling the numbers ioi will have for last week probably won't be representative. If I was a guessing man, I'd say the majority of PS3's sales were online-based because of the deals of free controllers and free blu-ray remotes, and also promoting the 5 free Blu-ray movies. I think online sales aren't exactly easy to keep track of, but I could be wrong.