In 2006, LEGO released 11 Castle sets across 2 subthemes, all of these sets have been retired. Subthemes for that year included Knights Kingdom I and Knights Kingdom II. For that year, the total price of all retail sets cost $320, today those sets are valued around $1,562, a growth of 388%.
Most valuable 2006 LEGO Castle set
10176 King's Castle $541.35
Highest growth 2006 Castle set
8813 Battle at the Pass +618.58%
11 sets
Theme / Subtheme Castle / Knights' Kingdom II
Year 2006
Pieces 130
Availability Retired
8701 LEGO Knights' Kingdom II King Jayko
Retail $19.99
Value $59.57
Growth  +198.0%
Annual growth 4.5%
Theme / Subtheme Castle / Knights' Kingdom II
Year 2006
Pieces 112
Availability Retired
8702 LEGO Knights' Kingdom II Lord Vladek
Retail $19.99
Value $78.83
Growth  +294.3%
Annual growth 7.5%
Theme / Subtheme Castle / Knights' Kingdom II
Year 2006
Pieces 43
Availability Retired
8703 LEGO Knights' Kingdom II Sir Kentis
Retail $9.99
Value $66.12
Growth  +561.9%
Annual growth 7.2%
Theme / Subtheme Castle / Knights' Kingdom II
Year 2006
Pieces 40
Availability Retired
8704 LEGO Knights' Kingdom II Sir Adric
Retail $9.99
Value $32.64
Growth  +226.7%
Annual growth 7.0%
Theme / Subtheme Castle / Knights' Kingdom II
Year 2006
Pieces 38
Availability Retired
8705 LEGO Knights' Kingdom II Dracus
Retail $9.99
Value $30.16
Growth  +201.9%
Annual growth 4.5%
Theme / Subtheme Castle / Knights' Kingdom II
Year 2006
Pieces 44
Availability Retired
8706 LEGO Knights' Kingdom II Karzon
Retail $9.99
Value $35.29
Growth  +253.3%
Annual growth 5.1%
Theme / Subtheme Castle / Knights' Kingdom II
Year 2006
Pieces / Minifigs 381 / 11
Availability Retired
8813 LEGO Knights' Kingdom II Battle at the Pass
Retail $39.99
Value $287.36
Growth  +618.6%
Annual growth 7.3%
Theme / Subtheme Castle / Knights' Kingdom II
Year 2006
Pieces / Minifigs 152 / 3
Availability Retired
8821 LEGO Knights' Kingdom II Rogue Knight Battleship
Retail $19.99
Value $121.02
Growth  +505.4%
Annual growth 5.8%
Theme / Subtheme Castle / Knights' Kingdom II
Year 2006
Pieces / Minifigs 250 / 3
Availability Retired
8822 LEGO Knights' Kingdom II Gargoyle Bridge
Retail $29.99
Value $117.70
Growth  +292.5%
Annual growth 6.1%
Theme / Subtheme Castle / Knights' Kingdom II
Year 2006
Pieces / Minifigs 431 / 6
Availability Retired
8823 LEGO Knights' Kingdom II Mistlands Tower
Retail $49.99
Value $192.08
Growth  +284.2%
Annual growth 5.9%
Theme / Subtheme Castle / Knights' Kingdom I
Year 2006
Pieces / Minifigs 869 / 12
Availability Retired
10176 LEGO Knights' Kingdom I King's Castle
Retail $99.99
Value $541.35
Growth  +441.4%
Annual growth 7.6%