Mine is a Pilkington, it is not OEM, it does have the heater and the installed price was $494.87 on June 4th 2012.
It is a p/n FW3185 GTY. From Budget Auto Glass Modesto CA. I have been a customer for years and they always give me a reasonable price. They come to the house and install in my driveway.
I probably buy a new windshield every year, sometimes I get lucky and go a couple years. The aftermarket ones that I get seem not to crack as easy, but they sure get a lot of chips.
This new 4Runner may go though more windshields than my prevous vehicles due to the angle of the windshield. I already have more chips than I can count on this one that has been in since June. But no stars or cracks yet.