hey man i just purchased some brand new s. tech tein spring off of ebay last week and i got them in two days ago. for my 07 wrx. this is the web page of the seller. tein is selling the s.techs for around $340 or some thing. i got them for $213 + shipping with came up to $240 roughly. authentic. im about to put them on my ride this weekend.
check them out.
eBay Store - skunk2 Apexi Tein Exedy ACT Walbro Koyo Avid Tokio HKS: