Holy s**t !! $1000, I could by a small generator for $300 and use my block heater.
You will spend about 1000 on a decent generator to run the heater element. Take a look at fuel consumption on a generator plus the idea of getting it stolen, exhaust etc. I have a honda eu3000 that will run it but gets spendy to operate, change oil, air filters etd. I don't have an espar yet but am looking at putting one in as soon as my dealer here agrees that it is even possible. They say it can't be put in a duramax.
Oh, ya Max Power - no need to comment - I know you have one and we have had this discussion before that it will indeed go in a duramax. Maybe when you are in town we can stop by and show them
I need to find someplace else to buy one than locally since they won't even sell it to me.