7066 LEGO Alien Conquest Earth Defense HQ

LEGO 7066 Earth Defense HQ is a Space Alien Conquest set released in 2011, containing 875 pieces and 5 minifigures. The set centers on a multi-vehicle mobile headquarters with a detachable laboratory trailer, an interceptor shuttle, a missile-firing ground defense unit, an analysis bay, a prison pod, and a mini rescue vehicle. Minifigures include an Alien Android, an Alien Trooper, an Alien Defence Unit soldier, and a toxic cleanup scientist, with accessories such as an Alien Clinger and assorted weapons. A wing sticker bearing “nnenn” commemorates fan builder Nick “nnenn” Nelson.

A new and sealed Earth Defense HQ is currently valued at around $274, with annual growth of approximately 6%. The average used price is $140 for those in good overall condition. Based on current trends, this set could be valued near $291 within the next year. The 5 included minifigs account for approximately 28% of the set's total value. The set was available for 11 months, from May 2011 to April 2012.