So, why don't I find this stuff on the Happ site ?
I can only find the black vinyls here:
http://happcontrols.com/vending/acesor/49057200.htmOnly black/grey and only one size (40" which is about 1 meter).
From that picture, I think D (Black Pica Vinyl) best matches what's on the SW:

Since they have all those blue's I bet they have more colors too ?
About the white stuff being expensive: As my uncle always says: better expensive than not for sale.

And it's not like we need 10's of meters.....the white stuff seems to carry Chinese characters....if we could google the source ......
The price for the black stuff seems to be a good match to the US prices. Big advantage to get it from a European source is no import duties worries. If Suzo UK has this stuff, Suzo headquarters can deliver it too. I once ordered T-molding from them and that stuff had to come from the UK as well.....
I just checked, the SW cockpit is only 64,1 cm.wide, so that 1,25 maybe "just" wide enough to cut in half too for that machine, since you have to deduct two side panels on each side