In 1964, LEGO released 4 Classic Basic Set 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 $2,390.
Most valuable 1964 LEGO Classic Basic Set set
395-3 New York World Fair Promo $1,278.65
Highest growth 1964 Classic Basic Set set
040 Basic Building Set in Cardboard +11636.94%
4 sets

040 Basic Building Set in Cardboard

Theme / Subtheme Classic / Basic Set
Year 1964
Pieces 290
Availability Retired
040 LEGO Basic Building Set in Cardboard
Retail $4.25
Value $498.82
Growth  +11636.9%
Annual growth 8.1%

050 Basic Building Set in Cardboard

Theme / Subtheme Classic / Basic Set
Year 1964
Pieces 290
Availability Retired
050 LEGO Basic Building Set in Cardboard
Retail $5.50
Value $612.57
Growth  +11037.6%
Annual growth 8.0%

395-3 New York World Fair Promo

Theme / Subtheme Classic / Basic Set
Year 1964
Availability Retired
395-3 LEGO New York World Fair Promo
promotional
Value $1,278.65
Annual growth 11.6%

396-2 New York World Fair Promo

Theme / Subtheme Classic / Basic Set
Year 1964
Availability Retired
396-2 LEGO New York World Fair Promo
promotional