Agreed, they are pretty nice, but you also have to find the proper mice for it because of the short travel. In the G305, it is extremely light (lever action + spring tensioning). I will try them in some Zowie mice, it should work better there.
Also, you can find exactly the same looking switches on aliexpress for $1.7 / 10pcs. I have no idea if they are genuine Kailh (who would have thought one day we would be worried about fake Kailh products, lol), but they look 100% the same. Some of these offers actually don't advertise it as Kailh, just look the same.
I paid $10 for 20pcs to have that guaranteed genuine Kailh quality, haha.