In 1985, LEGO released 3 Town Construction sets, all of these sets have been retired. For that year, the total price of all retail sets cost $20, today those sets are valued around $434, a growth of 2074%.
Most valuable 1985 LEGO Town Construction set
6682 Cement Mixer $175.00
Highest growth 1985 Town Construction set
6603 Shovel Truck +6122.09%
3 sets

6603 Shovel Truck

Theme / Subtheme Town / Construction
Year 1985
Pieces / Minifigs 27 / 1
Availability Retired
6603 LEGO Construction Shovel Truck
Retail $2.49
Value $154.93
Growth  +6122.1%
Annual growth 9.4%

6631 Steam Shovel

Theme / Subtheme Town / Construction
Year 1985
Pieces / Minifigs 47 / 1
Availability Retired
6631 LEGO Construction Steam Shovel
Retail $4.49
Value $104.28
Growth  +2222.5%
Annual growth 4.0%

6682 Cement Mixer

Theme / Subtheme Town / Construction
Year 1985
Pieces / Minifigs 90 / 1
Availability Retired
6682 LEGO Construction Cement Mixer
Retail $12.99
Value $175.00
Growth  +1247.2%
Annual growth 6.7%