The price isn't that steep for a 100% stainless steel turbo-back exhaust with a hi-flow cat. Compare it to other turbo-back exhausts such as Vishnu's (~$1350), MRT (~$1,245), or BPM (~$1200) and you'll see that they're all right around there. Remember, this includes a downpipe, catted midpipe, and the muffler section. A good cat-back exhaust alone costs ~$500-600. Perrin's downpipe with cat is ~$550.
A Prodrive Power Pack (Stage 1) comes only with the rear muffler, intercooler hoses (which the STi won't need), and an ECU re-flash for a 20whp gain according to
http://www.spimotorsports.com/. From my understanding (from
[email protected]), the PPP for the WRX is not warrantied by Subaru like in certain places in Europe.
-Mike-