£100    Fiat Tipo 2018 Estate Crash Sensor

I have a Fiat Tipo Easy 1.4 Estate 2018. I am looking for a replacement crash sensor. The sensor in this car needs replacing as it does the anti-collision as well and upon repairing, the check airbag light has come on and my mechanic has said it'll be the crash sensor. The one out of the car is a Bosch MRREVO14F - 52112324 - I've had a few quotes for getting them brand new but they are between 400-800 which seems really expensive so I'm looking to see if anywhere has any out of scrap cars.