[Valer]

It is unlikely to actually be a damaged reluctor,it's a big job to change it, involving removing the gearbox etc
it looks as though the garage has been playing parts darts using your money though,
most of the parts (other than the crank sensor) have nothing to do with it.
i would find a better garage

P1325 The ECM detects an non plausible crankshaft signal
Diagnostic Aids
The following conditions may also set the DTCs:
• Physical damage to the crankshaft position sensor or the reluctor wheel
• Excessive play or looseness of the crankshaft position sensor or the reluctor wheel
• Improper installation of the crankshaft position sensor or the reluctor wheel
• Foreign material passing between the crankshaft position sensor and the reluctor wheel
• Excessive air gap between the crankshaft position sensor and the reluctor wheel
⇒ If there is a condition with the crankshaft position sensor, the tachometer will be inoperative
• The crankshaft position sensor may be out of range after a hot soak.
Review the freeze frame/failure records for engine coolant temperature when the DTC set.

 

[Valer]

I think that original diagram is a little misleading,here's a couple more