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 $2,550, a growth of 21550%.
Most valuable 1964 LEGO Classic Building set
324-2 House with Garage $1,394.86
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 $1,155.49
Growth  +16670.5%
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 $1,394.86
Growth  +28424.7%
Annual growth 9.6%