Do you have to have a MB brake pad when changing the pads? And Brake Wear Ind

What is your question?

I changed my Rotors and Pads because the Brake Wear indicator came on. I upgraded to Slotted & Dimpled Rotors. I didn't change the Brake Wear Indicators so I was going to have MB dealer do it and they say I have to have MB Brake pads and change the Brake Waer sensors. And want like $600 to do it (Crooks)