I bought both my visors, for $64 dollars after tax, at a local motor cycle shop... but I live in Houston, TX, and the availability of such things drives there prices down... supply and damand... your best bet is to buy two visors, from one vendor, off Ebay if I were not some where I could just go pick one up...
And to the EVA HELM, wow, how that will ever have a decent looking visor is beyond me, but if you look there are raised edges, like a doubled MK VI visor, if you could find something large enough and rounded like that, you may be able to tint it with gold reflective window tint, but do it in sections, using the rasied or doubled parts to hide the cuts... but I haven't tried this, but if I were to try, thats how I would go at it... but I will never try sry