In 2015, LEGO released 3 City Value Packs sets, all of these sets have been retired. For that year, the total price of all retail sets cost $320, today those sets are valued around $529, a growth of 65%.
Most owned 2015 City Value Packs set
66523 City Super Pack 3-in-1
3 sets

66521 Demolition Super Pack

Theme / Subtheme City / Value Packs
Year 2015
Pieces 1,393
Availability Retired
66521 LEGO City Demolition Super Pack
Retail $129.99
Value $266.63
Growth  +105.1%
Annual growth 6.2%

66522 Deep Sea Explorers Super Pack 4-in-1

Theme / Subtheme City / Value Packs
Year 2015
Pieces 794
Availability Retired
66522 LEGO City Deep Sea Explorers Super Pack 4-in-1
Retail $129.99
Value $178.17
Growth  +37.1%
Annual growth 4.6%

66523 City Super Pack 3-in-1

Theme / Subtheme City / Value Packs
Year 2015
Pieces 528
Availability Retired
66523 LEGO City Super Pack 3-in-1
Retail $59.99
Value $84.67
Growth  +41.1%
Annual growth 3.5%