If you have an email address associated with a Panasonic Platinum Partner, you've got to go check them out.
When I went to shop.panasonic.com a month ago, they had the 55 ST50 for $1,400 + shipping as I recall. They were throwing in a webcam, but who cares?
I was going to get it from Amazon, but they raised the price from $1,350 to $1,450. So I checked Panasonic.com again and they actually lowered the price to $1,175 with free shipping.
I've heard people say bad things about Panasonic Direct, but I ordered the TV at 7:15am and got a confirmation at 1:00pm that it had already shipped.