In 2019, LEGO released 6 Ideas sets across 2 subthemes, all of these sets have been retired. Subthemes for that year included Licensed and Promotional. For that year, the total price of all retail sets cost $533, today those sets are valued around $658, a growth of 24%.
Most valuable 2019 LEGO Ideas set
21318 Treehouse $226.17
Highest growth 2019 Ideas set
40335 Space Rocket Ride +92.46%
Most owned 2019 Ideas set
21319 Central Perk
6 sets

21316 The Flintstones

Theme / Subtheme Ideas / Licensed
Year 2019
Pieces / Minifigs 748 / 4
Availability Retired
21316 LEGO Ideas The Flintstones
Retail $59.99
Value $95.88
Growth  +59.8%
Annual growth 11.0%

21317 Steamboat Willie

Theme / Subtheme Ideas / Licensed
Year 2019
Pieces / Minifigs 751 / 2
Availability Retired
21317 LEGO Ideas Steamboat Willie
Retail $89.99
Value $144.99
Growth  +61.1%
Annual growth 10.9%

21318 Treehouse

Theme Ideas
Year 2019
Pieces / Minifigs 3,036 / 4
Availability Retired
21318 LEGO Ideas Treehouse
Retail $249.99
Value $226.17

21319 Central Perk

Theme / Subtheme Ideas / Licensed
Year 2019
Pieces / Minifigs 1,070 / 7
Availability Retired
21319 LEGO Ideas Central Perk
Retail $59.99
Value $80.00
Growth  +33.4%
Annual growth 11.5%

21320 Dinosaur Fossils

Theme Ideas
Year 2019
Pieces / Minifigs 910 / 2
Availability Retired
21320 LEGO Ideas Dinosaur Fossils
Retail $59.99
Value $86.23
Growth  +43.7%
Annual growth 11.0%

40335 Space Rocket Ride

Theme / Subtheme Ideas / Promotional
Year 2019
Pieces / Minifigs 154 / 1
Availability Retired
40335 LEGO Ideas Space Rocket Ride
Retail $12.99
Value $25.00
Growth  +92.5%
Annual growth 11.4%