According to the search results, a Lava Dragon is a Legendary pet in the game Adopt Me! that was added to the game on October 6, 2022, as part of the Halloween Event. It can only be obtained through trading and costs 1,000 Robux. As of October 2022, the Lava Dragon is worth a little more than the Dancing Dragon. Therefore, the value of a Lava Dragon in Adopt Me! is currently determined by the players who are trading it, and it can vary depending on the demand and supply of the pet in the game.