I picked up a Spec Stage I kit for 169 plus shipping off of Ebay. The place already responded to an email. You can check out the website @ TREperformance.com. For comparison, PartsShopper has them for 209.
It's been a while, about a year, and maybe things have changed, but I swear I paid under $300 total for my Stage III directly from SPEC. I think it was around $280.