In 1997, LEGO released 2 Dacta System sets, all of these sets have been retired. For that year, the total price of all retail sets cost $74, today those sets are valued around $232, a growth of 311%.
Most valuable 1997 LEGO Dacta System set
9291 Medium Basic Set $200.73
Theme / Subtheme Dacta / System
Year 1997
Pieces 9
Availability Retired
9279 LEGO Dacta System Small Building Plates
Retail $14.99
Value $31.18
Growth  108.0%
Annual growth 2.8%
Theme / Subtheme Dacta / System
Year 1997
Pieces 822
Availability Retired
9291 LEGO Dacta System Medium Basic Set
Retail $59.50
Value $200.73
Growth  237.4%
Annual growth 4.6%