As I have a leaking rear shock absorber on my Al-Ko chassied Bel-Air I'm going to need a new pair .

So far all my internet searching has not found an alternative to the (very) expensive ones from Al-Ko direct. A lot of places advertise the caravan version for around £99 a pair but the motorhome equivalent is more than that per unit.

Anyone found an equivalent? (its the blue ones that I need)