As Discuss it on A4 forum, I got some good offer to do group buy for audiforums member.
for details of the unit please visit this links:
http://www.sprintbooster.gr/en/
http://www.amb-tuning.de/produkte/sp...unbekannt.html

offering price is 250USD plus shipping to USA. but I will negotiate for better pricing if we can get more order.
At the moment I am expecting for 10+ order and will start from there. Payment probably done by paypal or other methods.
I will update it here on daily basis.
please specify your cars (models, year, FWD, AWD, Manual, Automatic)..and your details ( name, address, phone, email)
please email me your detail request to info@kuping.net or audiwerkz@gmail.com

rgds
Imam