Well, the Monaco wipers can be ordered at quite a few online RV vendors for around $30-$35. I have no idea what saddle size they use, however.
click >
@
click >
@
These are TruVision BA900 and I'm thinking the "900" might stand for 900 mm which will equal 35.4331"
But, as I was searching around, I found several other alternatives.
Here's a heavy duty bus wiper on Ebay for $19.99 that is 900 mm which equals 35.4331" so again, close to the size you're looking for. click >
@
Here's a 36" transit bus wiper for $31.18 that will accommodate both 13.6 mm and 17 mm saddles. click >
@
This will at least give you a place to start.
-harry
eta: forget the one on Ebay, that is a European price. It denotes that the U.S. price is approximately $30.37.