In my case parts ( rotors + pads ) alone were CAD$ 1k. BUT Tesla might have quoted you also replacement of the electric parking brake callipers. They replace them because the pins are rusted and seized. And at a shop's labour rate it is uneconomical to work on them. They are in the neighbourhood of CAD$ 700.00 each. That would put the parts cost at about CAD$ 2,400 . So, a total cost as quoted of about CAD$ 3k is in the ballpark.