I was looking for a VNT 15 to repair mine, and found this one on e-bay and bid. However today the seller later stated that it is a KKK and not a Garrett, so I can't use it. But maybe someone else might be interested. He states the actuator is bad, but I bet it is vanes that need cleaning. Current bid is $26. It was up to $51 before I retracted my bid due to the change in description and I was the high bidder.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&viewitem=&item=140194973728