Let's see. Recent S2 frame sales on ebay (price+shipping):
$1525 (2010, 56 cm, zero miles)
$1502 (2010, 54 cm, 400 miles)
$1270 (2010, 51 cm, "a few light marks")
$1180 (2009, 48 cm, "a few light marks")
$1125 (2010, 56 cm, 2000 miles)
$1015 (2011, 54 cm, minor paint damage)
$860 (2008, 51 cm, "usual wear")

The one you're referring to is 51 cm (that frame size may be a bit harder to move), and the seller is asking $40 for shipping.

On one hand, it is quite possible that it will go for 1450..1500 with shipping.
On the other hand, since it's out of warranty anyway, personally, I'm not sure if I'd pay 1500 for the privilege of being the first person to put miles on it, when I can get a slightly used frame for 1200.

I wonder how hard it is to get a new frame like that one below MSRP at an authorized dealer?