I bought mine from VAC Motorsports when they had their 10% off sale (happens often). I know that there was a group buy not too long ago for the Stromung exhaust in the for sale section. Take a look there, they also come up used every now and again, could get a decent deal on one. Sucks about the shipping to EU though
I've posted videos on youtube of my car in idle and driving with Stromung and RE Xpipe. Just did headers but haven't gone for a drive yet.