In 2015, LEGO released 2 Duplo Value Packs sets, all of these sets have been retired. For that year, the total price of all retail sets cost $200, today those sets are valued around $231, a growth of 15%.
Most owned 2015 Duplo Value Packs set
66525 Farm Super Pack 3-in-1
2 sets

66524 Train Super Pack 3-in-1

Theme / Subtheme Duplo / Value Packs
Year 2015
Pieces 177
Availability Retired
66524 LEGO Duplo Train Super Pack 3-in-1
Retail $129.99
Value $174.16
Growth  +34.0%
Annual growth 3.0%

66525 Farm Super Pack 3-in-1

Theme / Subtheme Duplo / Value Packs
Year 2015
Pieces 142
Availability Retired
66525 LEGO Duplo Farm Super Pack 3-in-1
Retail $69.99
Value $56.52