I have seen some agilitys like mine with a tall visor like yours fitted so i know you do get them. When i looked online a few months ago i couldnt find any under £40-£50 and i cant remember if that inc a bracket, dont think it did. Anyway that was too expensive for me to justify. I just bought the small one i got and also invested in a vintage fishtail parka with an artic liner
Worked out about the same price, well thats what i told the wife anyway