This HUD by Outy Banjo cost me $500L. What I really like is its ability to search through over 300 phrases to animate your face based on what you say. If you spend a little time tweaking it, you can match expressions according to your speaking style. Outy Banjo outlines how to use the HUD in his product description which you can read when you visit the product page of Outy banjo’s  Second Life Marketplace store #2905  – Auto Emote – Automatic Facial Animation HUD.