in April 2018 I bought handle bar risers from M&P £11.90 looking for the same for my SV but now they go for just over £25 inc postage.
I tried to buy them but M&P wanted my name and adress phone etc and then repeat if for delivery address and again for billing address and all that after they said I don't have the log in that I have used before a few times.
I am still looking for mirror bar extenders in black .....does anyone have a link to a supplier and no I'm not paying £120 for something with a fancy German name on it.