Brakepad special at Big Dogs

Hello fellow LC owners

Bid Dogs have a special on brakepads:

Front                    Ferodo FDB2265ST(R 545.00 per set)      R 1090.00
Rear                      Ferodo FDB2039ST                                  R 325.00
Shipping                                                                                  R 125.00

TOTAL                                                                                      R 1540.00

How does this compare with the dealer prices? Does BMW also use Ferodo?
Will it affect the warranty if you replace it yourself? If this is a good deal, can one buy and ask them to fit it or will it go off bad at the dealerships? I have read that some did it with the oil.
I have done 10000km's with the bike and have around 2mm left on the back pads. Is it a difficult job to do it on your own?



Thanks for your help