There is an old green male dragon on ebay for $90 🙂
http://cgi.ebay.com/Windstone-Collectible-Emerald-Male-Dragon-Figurine-/160563970035?pt=LH_DefaultDomain_0&hash=item25625bbff3
Also, here is a quick list of what was made in silver and old green (to help you narrow your search a bit)
Old Green
Emperor-pretty rare
Male
Mother
Young
hatching
curlie-this was made a few years ago
fledgling-this was made a few years ago but he is pretty rare as there was only a small batch made
Silver
Emperor
Male
Mother
hatcher
Young
curlie
lap
sitting spectral
Hatching empress
hatching emperor
kinglet
Old Warrior (only a prototype on ebay. I belive 12 were sold. I haven’t seen one come up for re-sale)