Re: Brakes
If you just need rotors, you can buy aftermarket and decent, low-dust pads for a lot less than a grand. My indie shop put rotors and pads on my SRT6, which is more expensive than a stock XF:
* Centrex rotors - $377 (the Parts Bin)
* Disc Italia Kevlar Pads - $200 (Brakeworld)
* Labor (2 hours) - $175
Best approach is to find the right part number for the rotors and pads, then google and compare prices.
Two air filters (even K&N) are about $80 total -- it takes a pair. I purchased Valeo wiper blades from Tire Rack (one 20", one 21") for $10/each. At the time it was a 2-for-1 sale.