Just go to Circuit City, BestBuy, Amazon, Walmart websites...no need to trust my word for it....Playstation 2's are sold out. I spoke to sales people at our local Best Buy, Circuit City, and ToysRUs this weekend...they all said they underestimated demand.
You're right. The only way to get them is to get with the retailer and try to predict UPS shipments. Sears for example has been getting a few each week but it doesn't come in there normal shipment so they don't know when they will show up. Most retailers are saying that its Sony to blame, not them, and that more will be in the stores after new year. One major affect is that many gamers who were undecided on X-box vs PS2 may have gone X-box. Especially with the "holiday" bundle they are offering.