I managed to snag a PS3 this morning. All in all, I got to the store at around 4AM, and I was already out by about 5:30, which isn't that bad at all. They still had plenty left after I got mine (I'd say at least 30), but judging by how long that line was I'd assume they're sold out by now.
But yeah, HEB Plus seems like a pretty cool store. I'll definitely try to check it out one day when it's not as crowded as all hell.