In 1977, LEGO released 2 LEGOLAND Vehicle sets, all of these sets have been retired. For that year, the total price of all retail sets cost $10, today those sets are valued around $592, a growth of 5827%.
Most valuable 1977 LEGOLAND Vehicle set
663 Hovercraft $411.57
Most owned 1977 LEGOLAND Vehicle set
619 Rally Car
2 sets

619 Rally Car

Theme / Subtheme LEGOLAND / Vehicle
Year 1977
Pieces / Minifigs 18 / 1
Availability Retired
619 LEGOLAND Rally Car
Retail $4.49
Value $179.98
Growth  +3908.5%
Annual growth 6.1%

663 Hovercraft

Theme / Subtheme LEGOLAND / Vehicle
Year 1977
Pieces 60
Availability Retired
663 LEGOLAND Hovercraft
Retail $5.49
Value $411.57
Growth  +7396.7%
Annual growth 9.4%