Ive been looking at fiesta prices trying to price up my zetec s to sell on a 2006 plate with 33k miles and i know what u mean about prices are everywhere. On eBay they seem to be selling for a good 1-1.5 k less than auto trader. I would say your one is worth 5.5k? It seems like the st's have nearly fallen to around the same sort of prices as the zetec s. maybe because of the insurance costs but I think st's should be fetching a lot more than the s's