I bought them about 4 years ago, I use to have them on my focus. Was planning on selling them but when I got the cougar the tyres on the standard rims wear done. So put the ST170 rims on the couagr instead buying 4 new 16" tyres.
They use to be really sort after when I had my focus, dont know if they still are. They are generally dearer than after market rims. I think they cost around ?ú550 from ford for the rims, the centre caps are extra, maybe ?ú20 each if I remember. Then you need to get tyres for them.
I bought the 4 rims with remould tyres and 8 centre cap off of ebay for ?ú300, they were REALLY badly kerbed thats why they were so cheap. Cost me nearly another ?ú250 to get them reburbised. The remould tyres were crap, and dangerous in the wet so I bought 4 conteniental contact sport2 tires for ?ú110 each. So in the end I would of been better off buying them from ford.
Heres a link to a pic of the focus if your interested, it was lowered 30mm on eibach springs