In 1964, LEGO released 2 Classic Building sets, all of these sets have been retired. For that year, the total price of all retail sets cost $12, today those sets are valued around $2,529, a growth of 21372%.
Most valuable 1964 LEGO Classic Building set
324-2 House with Garage $1,381.45
2 sets

322-2 Town House

Theme / Subtheme Classic / Building
Year 1964
Pieces 171
Availability Retired
322-2 LEGO Town House
Retail $6.89
Value $1,147.90
Growth  +16560.4%
Annual growth 8.6%

324-2 House with Garage

Theme / Subtheme Classic / Building
Year 1964
Pieces 174
Availability Retired
324-2 LEGO House with Garage
Retail $4.89
Value $1,381.45
Growth  +28150.5%
Annual growth 9.5%