In 1994, LEGO released 1 Space Unitron sets, all of these sets have been retired.
Theme / Subtheme Space / Unitron
Year 1994
Pieces / Minifigs 573 / 4
Availability Retired
6991 LEGO Unitron Monorail Transport Base
Retail $178.00
Value $3,328.30
Growth  1769.8%
Annual growth 9.3%