In 2011, LEGO released 4 Castle Kingdoms sets, all of these sets have been retired. For that year, the total price of all retail sets cost $140, today those sets are valued around $936, a growth of 569%.
Most valuable 2011 LEGO Castle Kingdoms set
7189 Mill Village Raid $402.35
Highest growth 2011 Castle Kingdoms set
7187 Escape from the Dragon's Prison +1579.14%
Most owned 2011 Castle Kingdoms set
6918 Blacksmith Attack
4 sets

6918 Blacksmith Attack

Theme / Subtheme Castle / Kingdoms
Year 2011
Pieces / Minifigs 104 / 2
Availability Retired
6918 LEGO Kingdoms Blacksmith Attack
Retail $9.99
Value $73.93
Growth  +640.0%
Annual growth 7.6%

7187 Escape from the Dragon's Prison

Theme / Subtheme Castle / Kingdoms
Year 2011
Pieces / Minifigs 185 / 4
Availability Retired
7187 LEGO Kingdoms Escape from the Dragon's Prison
Retail $19.99
Value $335.66
Growth  +1579.1%
Annual growth 14.2%

7188 King's Carriage Ambush

Theme / Subtheme Castle / Kingdoms
Year 2011
Pieces / Minifigs 286 / 4
Availability Retired
7188 LEGO Kingdoms King's Carriage Ambush
Retail $39.99
Value $124.54
Growth  +211.4%
Annual growth 6.6%

7189 Mill Village Raid

Theme / Subtheme Castle / Kingdoms
Year 2011
Pieces / Minifigs 663 / 6
Availability Retired
7189 LEGO Kingdoms Mill Village Raid
Retail $69.99
Value $402.35
Growth  +474.9%
Annual growth 14.0%