The Return of the King is a subtheme of The Lord of the Rings that consists of 3 sets that ran from 2012 to 2013. Most sets were released in 2013 which accounted for 2 sets. As of today, the average annual growth of sets in The Lord of the Rings The Return of the King is approximately 11.1% per year.
Most valuable The Return of the King set
79008 Pirate Ship Ambush $621.63
Highest growth The Return of the King set
79007 Battle at the Black Gate +725.20%
Most owned The Return of the King set
9470 Shelob Attacks
The Return of the King was an unofficial subtheme of the LEGO The Lord of the Rings theme. It was introduced in 2012 and consists of three sets.
3 sets

79008 Pirate Ship Ambush

Theme / Subtheme The Lord of the Rings / The Return of the King
Year 2013
Pieces / Minifigs 756 / 9
Availability Retired
79008 LEGO The Lord of the Rings The Return of the King Pirate Ship Ambush
Retail $99.99
Value $621.63
Growth  +521.7%
Annual growth 17.2%

79007 Battle at the Black Gate

Theme / Subtheme The Lord of the Rings / The Return of the King
Year 2013
Pieces / Minifigs 656 / 5
Availability Retired
79007 LEGO The Lord of the Rings The Return of the King Battle at the Black Gate
Retail $59.99
Value $495.04
Growth  +725.2%
Annual growth 11.5%

9470 Shelob Attacks

Theme / Subtheme The Lord of the Rings / The Return of the King
Year 2012
Pieces / Minifigs 227 / 3
Availability Retired
9470 LEGO The Lord of the Rings The Return of the King Shelob Attacks
Retail $19.99
Value $157.12
Growth  +686.0%
Annual growth 10.7%