It does not have to be that (APR) pricey though mate. The APR pump although very pricey, has been made up, pressure tested and is ready to be fitted to a car.
The KMD pump upgrade is "only" £200 for the internals of the pump (which by the way is a lot of money for what it is you get) and the whole process takes approx 1 hour to take the pump off, upgrade internals and tefit to car. Even paying £50-£75 an hour for labour getting someone else to do it for you works out at about £300 including a new follower.
Bang for buck, this is better than a decent intake and second only to a remap.
Note for those will H model pumps on the Cupra - there have been issues with some H model pumps having different sizes used for the pump casing and internals (0.1mm different) which results in the car not running worth a toss when the upgrade is done. J model pumps have so far proved no
problem. The cars that have experienced this issue are so far limited to the Leon Cupra, in particular the
K1.