I was quoted £350 minimum for this job by a garage in Southampton. I got the replacement sensor on Amazon (delivered next day-garage could only get me in a week later) and within 15 mins it was fitted...no special tools needed, just a Torx T25/30 and 8mm/10mm socket.
Here's a list of products mentioned in the video.
These are just links to assist you. I am NOT an Amazon Affiliate and get nothing if you buy from them:
Mercedes Pressure Differential Sensor
https://amzn.to/34s7ALb

Bosch Pressure Differential Sensor
https://amzn.to/3noe1aQ

Other sensor
https://amzn.to/2SK7WaF

Air filters (Left and right
https://amzn.to/30DFaMS
https://amzn.to/3iBLuLc

OBD2 scan tool
https://amzn.to/33yp0X2

Autel wifi OBD2
https://amzn.to/2GyR43Q