Ford Ka - clips securing plastic wheel arches

Hi, My wife has just got a P reg Ka, and I need to get some of the plastic clips and their mating sockets that hold the grey plastic mouldings (gaiters?) to the front wings.... I tried contacting our local Ford dealer and nearly fainted when he quoted me something that would clear off the national debts of several of the smaller third world countries. Please could someone advise me as to a source of these items other than thro a Ford dealership? thanks Tony