Yes, I agree, the block heater thread is lost in the space-time continuim.
I will re-state my post with a correction based on your information:
TMS USA discontinued block heaters a couple years ago and as Hugh observed it appears that Toyota Canada has done the same. There is an outlet in the US that I have access to that is offering some of the heater applications. The vendor is the same Canadian manufacturer that supplied them to TMS USA and probably Toyota Canada. They sell for about 30 dollars plus shipping.