Although intelligent, a blue dragonet requires training before it can bear a rider in combat. A blue dragonet can be trained as if it were a magical beast. To be trained, a blue dragonet must have a friendly attitude toward the trainer (this can be achieved through a successful Diplomacy check). Training a friendly blue dragonet requires six weeks of work and a DC 25 Handle Animal check. Riding a blue dragonet requires an exotic saddle. A blue dragonet can fight while carrying a rider, but the rider cannot also attack unless he or she succeeds on a Ride check.
Blue dragonet eggs are worth x,000 gp apiece on the open market, while young are worth x,000 gp each. Professional trainers charge 1,500 gp to rear or train a blue dragonet.
Carrying Capacity: A light load for a blue dragonet is up to x pounds; a medium load, x–xpounds; and a heavy load, x–x pounds.
Although the original text said 1,000 gp for eggs and young, let's look at comparable creatures:
Hippogriff eggs are worth 2,000 gp apiece on the open market, while young are worth 3,000 gp each. Professional trainers charge 1,000 gp to rear or train a hippogriff. (3 HD)
Giant eagle eggs are worth 2,500 gp apiece on the open market, while chicks are worth 4,000 gp each. Professional trainers charge 1,000 gp to rear or train a giant eagle. (4 HD)
Giant owl eggs are worth 2,500 gp apiece on the open market, while chicks are worth 4,000 gp each. Professional trainers charge 1,000 gp to rear or train a giant owl. (4 HD)
Griffon eggs are worth 3,500 gp apiece on the open market, while young are worth 7,000 gp each. Professional trainers charge 1,500 gp to rear or train a griffon. (7 HD)
So I'm thinking 3,000 gp for eggs and 5,000 gp for young. Thoughts?