In 2007, LEGO released 4 City Traffic sets, all of these sets have been retired. For that year, the total price of all retail sets cost $107, today those sets are valued around $453, a growth of 324%.
Most valuable 2007 LEGO City Traffic set
7998 Heavy Hauler $164.70
Highest growth 2007 City Traffic set
7990 Cement Mixer +450.43%
Largest 2007 LEGO City Traffic set
7993 Service Station 402 pieces
Most owned 2007 City Traffic set
7991 Recycle Truck
4 sets

7990 Cement Mixer

Theme / Subtheme City / Traffic
Year 2007
Pieces / Minifigs 213 / 1
Availability Retired
7990 LEGO City Cement Mixer
Retail $14.99
Value $82.51
Growth  +450.4%
Annual growth 5.1%

7991 Recycle Truck

Theme / Subtheme City / Traffic
Year 2007
Pieces / Minifigs 206 / 1
Availability Retired
7991 LEGO City Recycle Truck
Retail $16.99
Value $76.59
Growth  +350.8%
Annual growth 4.8%

7993 Service Station

Theme / Subtheme City / Traffic
Year 2007
Pieces / Minifigs 402 / 3
Availability Retired
7993 LEGO City Service Station
Retail $39.99
Value $129.29
Growth  +223.3%
Annual growth 4.5%

7998 Heavy Hauler

Theme / Subtheme City / Traffic
Year 2007
Pieces / Minifigs 332 / 1
Availability Retired
7998 LEGO City Heavy Hauler
Retail $34.99
Value $164.70
Growth  +370.7%
Annual growth 5.7%