Out of curiousity, I was just watching ebay auctions end on ps3's. I've seen most go for around $100 profit +- 30. I've seen a couple go less than RSRP + tax. The 60GB versions make a little more profit, I'd say around $30-$40. Hopefully soon, I can go into a store and pick one up.
From what I've heard, Tuesday and Thursday around lunch is when BB gets shipments. I'm always in at work so I can never check.