Thanx for info.
But 46,2$ from one friction disc - it's crazy!
I had the Aprilia Dorsoduro 1200, she has also worn clutch discs. I ordered OEM friction discs for $ 34 per one, plus 6 springs. When they came to me through 2,5 month (!), it turned out that it is exactly the same friction discs as in the Dorsoduro 750, only their 10, not 9, and they are three times more expensive and they are no deficit.
Had I known about it, would not have to wait so long and so dearly paid for.
Such are the features of the market of spare parts ...