I did mine the cheapest way I have ever found.. But dont know if it is what you need....
Since it might not pass TUV.
Just take the drivers side off....
the one on the passenger side you need to loosen it and turn it about 30 degrees..
it cleans off the windshield all the way to the drivers side.
Cost - $0.00
Time - 20 min max (trial and error to make sure it is over enough)