In 2013, LEGO released 4 Icons sets across 4 subthemes, all of these sets have been retired. Subthemes for that year included Buildings, Modular Buildings, Trains, and Winter Village. For that year, the total price of all retail sets cost $700, today those sets are valued around $1,354, a growth of 93%.
Most valuable 2013 LEGO Icons set
10234 Sydney Opera House $425.80
Highest growth 2013 Icons set
10232 Palace Cinema +156.38%
4 sets

10232 Palace Cinema

Theme / Subtheme Icons / Modular Buildings
Year 2013
Pieces / Minifigs 2,196 / 7
Availability Retired
10232 LEGO Palace Cinema
Retail $149.99
Value $384.55
Growth  +156.4%
Annual growth 11.5%

10233 Horizon Express

Theme / Subtheme Icons / Trains
Year 2013
Pieces / Minifigs 1,351 / 6
Availability Retired
10233 LEGO Trains Horizon Express
Retail $129.99
Value $309.46
Growth  +138.1%
Annual growth 6.4%

10234 Sydney Opera House

Theme / Subtheme Icons / Buildings
Year 2013
Pieces 2,989
Availability Retired
10234 LEGO Sydney Opera House
Retail $319.99
Value $425.80
Growth  +33.1%
Annual growth 6.2%

10235 Winter Village Market

Theme / Subtheme Icons / Winter Village
Year 2013
Pieces / Minifigs 1,261 / 9
Availability Retired
10235 LEGO Winter Village Market
Retail $99.99
Value $233.74
Growth  +133.8%
Annual growth 7.6%