The Peacock color is pretty common, BUT it is a retired piece. It is hard to say what to ask for him, but based on the picture and your description, you could try asking around $150 for him. ??
What is really helpful when you want to get your full asking price for the dragon, is to take him outside in the sunshine and take the best pictures you possibly can of him. Many collectors will happily pay a fair price when the pictures assure them of exactly what they are getting. 🙂
A photo of the back, front, both sides, and the bottom of the statue, and closeups of his face, will really help sell your dragon for what he’s fully worth. Collectors LOVE good photos when buying!
He looks to be in nice shape, and the Scratcher is a popular sculpt. You should not have too much trouble finding a happy home for him. 🙂