Ok so Tro-Nik responded:
because the pads does not insert into the caliper
- first kit - 180 USD
- second kit - 470 USD
without delivery
So I'm almost sure that with that cost along with the rotors and calipers it's a bit too much for me.
That puts me back to the X5 50i caliper setup, or if feasible, the E70 X5M setup, if that will fit.