Originally Posted by Patek
You may have to fly to Peru.
that was going to be my suggestion.. there are a very small number of vicuna jackets that end up here/ebay/etc
there is a chain of nice boutiques in Peru names KUNA. They sell certified vicuna, as well as guanaco, and various levels of alpaca products;
they have a shop at the airport in Lima as well as a few within the city (Miraflores has one that I ransacked)