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 $2,506, a growth of 21177%.
Most valuable 1964 LEGO Classic Building set
324-2 House with Garage $1,366.78
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 $1,139.60
Growth  +16439.9%
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 $1,366.78
Growth  +27850.5%
Annual growth 9.5%