I have a set of OEM Z4M front pads. They were on my front brakes for less than one week. The dealer installed them, and I changed them out that weekend.
They have the dealer's anti rattle gunk on the backing plate, but function wise, the pads are 99.99 percent what they were when new.
(Tischer sells them for $110 + shipping)
$80.00 shipped +4% paypal fee = $83.20 shipped.