For those who might want a genuine Espar or Webasto air or water heater. I just purchased from this company.
They do have an Amazon store but, what I wanted was not on Amazon so I ordered from their website. It was 1/2 price, including shipping, over what I could get the exact thing from anyone in the US. Saved me over $1000.
They are in Russia and it only took about 2 weeks with tracking better than some US companys. They also have some Russian branded units. Communication is a bit slow, they do type in excellent English though.