LEGO 3847 Magma Monster is a Games set valued at $18 for new and sealed sets, up 20% from an original retail price of $14.99. The set retired in January 2012 with annual appreciation averaging 1.27% since. Used copies are valued between $8 and $11 depending on condition.
LEGO 3847 Magma Monster is a Games set released in 2010, containing 95 pieces and four microfigures. The buildable board game depicts an underground lava cavern with a molten stream, a brick-built magma monster, a golden treasure, a fire wall, a bat, and a customizable LEGO die. Players navigate the lava and confront the monster while competing to reach the treasure, using the included rules and modular board elements. In the United States it was sold as a Special Edition at LEGO Retail Stores and Walmart.
A new and sealed Magma Monster is currently valued at around $18, with annual growth of approximately 1%, which is lower than other Games sets. The average used price is $9 for those in good overall condition. The 4 included minifigs account for approximately 27% of the set's total value. New and sealed listings currently range from $18 to $27. The set was available for 17 months, from August 2010 to January 2012.