Vanilla $10,000 Trike.

The Vanilla Trike was custom built by bike maker Sacha White for his daughter, which costs him around $10,000. a Brooks leather saddle, cro-moly frame, headset from Campagnolo, front hub and rear wheels from Phil Wood and front end forks fashioned from stainless steel. etc.  I think you can get your own here.  Vanilla Bicycles.