I have bought a few Honda sets from Yamiya before covid and shipping was OK. K2-K8. I think around $20US each.
They look good but are really useless with low euro bars.
The only thing I see are my arms in leather.
To many scary moments with cars coming too close without detecting them made me to upgrade my K6 late last year.
It got same type it got in the 80's, new original Kawasaki Z1-900 mirrors.
Black, but I see the road with traffic behind me now.
The old Kawasaki mirrors from the 70's felt sturdier though.
I rode my K2 yesterday and swore about the worthless Honda mirrors.
I ordered 2 sets of Z1-900 style aftermarket mirrors in chrome and stainless today.
They will hopefully work as good as the black original my K6 got.
Important to see the road with traffic behind the bike, squad cars and similar too
EDIT:
Still low price, lower in $ US. Probably different currency rate today.
https://www.yamiya750.com/index.php?main_page=product_info&cPath=246_251_144_71&products_id=736https://www.yamiya750.com/index.php?main_page=product_info&cPath=246_251_144_70&products_id=181Their shipping cost is HUGE today.