Review for LEGO set 50011 The Battle of Helms Deep from Rebrickable
“The 50011-1 - The Battle of Helm's Deep is one of the last sets to come out in this theme. It features Helm's Deep, the fortess that got invaded by the Uruk-hai in Lord of the Rings - The Two Towers. The objective it to either defend the fortress against the invaders, or to... More invade the fortress. According to Brickset, the set was for sale for a whopping 41 days, before they pulled the plug. That might explain the high prices of the MicroFigs.”
Full review at rebrickable.com