Why do you think that the price for a Bosch diesel Rover 75 fuel filter is £9 more expensive if you go to the Eurocar parts site direct?
Than it is on Amazon and Ebay from the same supplier.
Seems a bit unfair on customers who go direct to the site without checking the other outlets and £9 is a hefty surcharge on an £18 item
https://www.eurocarparts.com/fuel-filters
https://www.amazon.co.uk/Bosch-F0264...er+fuel+filter