I have 4 dark-ish green dragons (3 PCs, one imp, all have iri and current, terts are underbelly and crackle. There' also an iri/shim/belly PC, but she's reserved until I hear back from a friend about possibly wanting her) and 3 in the red and gold range (2 PCs and one spiral, all iri/shim/belly). As always, the price is whatever you think it's worth as long as it's at least what Id get for exalting it after it grows up. Newbies get them cheaper as long as they aren't going to be exalted right away, or even for free.
( here )