How does selling pets on here work?

Go to your pet's profile, click "manage pets", and key in the amount of gold you want to sell your pet/set it up for breeding for.

If you want to set it to public sale/breeding, leave the used id box blank. If you want to sell/breed to a specific user, key in their user id no in the respective box below the amount of gold. (You can get the player's id no by going to their profile page)

Once done, click set price.