Need to buy a set for the 2wd, last time they set me back £80 for the 4x4 (stainless ones I think - apparently they don't rust

).
Are they REALLY that expensive

Is there something about them or is it simply the ford markup ?
What spec are they ? I may have an alternative (and cheaper) supplier, but I need to know what I need before I talk to them.
Thanks in advance.
Greg