In 2015, LEGO released 7 Pirates sets in the subtheme Classic, all of these sets have been retired. For that year, the total price of all retail sets cost $248, today those sets are valued around $904, a growth of 264%.
Most valuable 2015 LEGO Pirates set
70413 The Brick Bounty $363.07
Highest growth 2015 Pirates set
70412 Soldiers Fort +430.01%
Largest 2015 LEGO Pirates set
40158 Pirates Chess Set 857 pieces
7 sets

40158 Pirates Chess Set

Theme Pirates
Year 2015
Pieces / Minifigs 857 / 20
Availability Retired
40158 LEGO Pirates Chess Set
Retail $59.99
Value $130.00
Growth  +116.7%
Annual growth 5.6%

70409 Shipwreck Defence

Theme Pirates
Year 2015
Pieces / Minifigs 84 / 2
Availability Retired
70409 LEGO Pirates Shipwreck Defence
Retail $12.99
Value $47.03
Growth  +262.0%
Annual growth 12.6%

70410 Soldiers Outpost

Theme Pirates
Year 2015
Pieces / Minifigs 164 / 3
Availability Retired
70410 LEGO Pirates Soldiers Outpost
Retail $19.99
Value $89.52
Growth  +347.8%
Annual growth 14.9%

70411 Treasure Island

Theme Pirates
Year 2015
Pieces / Minifigs 181 / 3
Availability Retired
70411 LEGO Pirates Treasure Island
Retail $19.99
Value $94.98
Growth  +375.1%
Annual growth 7.1%

70412 Soldiers Fort

Theme Pirates
Year 2015
Pieces / Minifigs 234 / 5
Availability Retired
70412 LEGO Pirates Soldiers Fort
Retail $29.99
Value $158.95
Growth  +430.0%
Annual growth 16.7%

70413 The Brick Bounty

Theme Pirates
Year 2015
Pieces / Minifigs 745 / 7
Availability Retired
70413 LEGO Pirates The Brick Bounty
Retail $99.99
Value $363.07
Growth  +263.1%
Annual growth 8.0%

5003082 Classic Pirate Minifigure

Theme / Subtheme Pirates / Classic
Year 2015
Pieces / Minifigs 24 / 1
Availability Retired
5003082 LEGO Classic Pirate Minifigure
Retail $4.99
Value $20.00
Growth  +300.8%
Annual growth 13.3%