I fitted 18s a couple of weeks ago

and got them for 1200 euro. Brand new 17s should only cost about 750-850(with tyres) even though they might be a special order cause of the fitment. I deal with robie in
www.icetronix , hes a good selection and had tsw rid in stock. i was gonna go for them myself...
He also does finance payment options over as little or as long as you like. It might get you a set until your credit card pays out...