as a breeder of northern bluies and i know other breeders as well they will go to about $150. you can get them straight out of NT as juvenile for $50 from a breeder or $80 pet shop , they are not rare or hard to get , seen them latley on another for sale site $70 also free to good home in SA .Juveniles in NSW , Vic ,SA, QLD generally go for $100 as a rule between the other breeders