In 1991, LEGO released 3 Town Promotional sets, all of these sets have been retired. For that year, the total price of all retail sets cost $25, today those sets are valued around $1,789, a growth of 7060%.
Most valuable 1991 LEGO Town Promotional set
1772 Airport Container Truck $892.04
Highest growth 1991 Town Promotional set
1774 Aircraft +2829.97%
3 sets

1772 Airport Container Truck

Theme / Subtheme Town / Promotional
Year 1991
Pieces / Minifigs 80 / 1
Availability Retired
1772 LEGO Airport Container Truck
promotional
Value $892.04
Annual growth 11.8%

1773 Airline Maintenance Vehicle with Trailer

Theme / Subtheme Town / Promotional
Year 1991
Pieces / Minifigs 109 / 1
Availability Retired
1773 LEGO Airline Maintenance Vehicle with Trailer
promotional
Value $165.11
Annual growth 5.8%

1774 Aircraft

Theme / Subtheme Town / Promotional
Year 1991
Pieces / Minifigs 137 / 2
Availability Retired
1774 LEGO Aircraft
Retail $24.99
Value $732.20
Growth  +2830.0%
Annual growth 10.1%