You could job out the evac and refill, and do the work yourself?

If you are DIY I would also look at the condenser dessicant pack and the expansion valve. Both very easy to get to.

A way to flush would be good if the inspection shows gunk in the valve and drier area. A vacuum would not pull that stuff out. Unless you decide to just replace the condenser assembly if there is evidence of internal contamination.

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04 X5 3.0i auto
03 X5 4.6is