In 1987, LEGO released 6 Service Packs Technic sets, all of these sets have been retired. For that year, the total price of all retail sets cost $18, today those sets are valued around $120, a growth of 568%.
Most valuable 1987 LEGO Service Packs Technic set
1346 Touch Sensors, 4.5V $34.53
Highest growth 1987 Service Packs Technic set
5102 Pneumatic Tube Black and Grey 60 and 100 cm +1091.96%
6 sets

1346 Touch Sensors, 4.5V

Theme / Subtheme Service Packs / Technic
Year 1987
Pieces 2
Availability Retired
1346 LEGO Technic Touch Sensors, 4.5V
Retail $5.99
Value $34.53
Growth  +476.5%
Annual growth 4.0%

5102 Pneumatic Tube Black and Grey 60 and 100 cm

Theme / Subtheme Service Packs / Technic
Year 1987
Pieces 2
Availability Retired
5102 LEGO Technic Pneumatic Tube Black and Grey 60 and 100 cm
Retail $1.99
Value $23.72
Growth  +1092.0%
Annual growth 6.6%

5103 Pneumatic Spring Cylinder 48 mm Red

Theme / Subtheme Service Packs / Technic
Year 1987
Pieces 1
Availability Retired
5103 LEGO Technic Pneumatic Spring Cylinder 48 mm Red
Retail $1.99
Value $8.60
Growth  +332.2%
Annual growth 4.4%

5104 Pneumatic Piston Cylinder 48 mm Yellow

Theme / Subtheme Service Packs / Technic
Year 1987
Pieces 1
Availability Retired
5104 LEGO Technic Pneumatic Piston Cylinder 48 mm Yellow
Retail $1.99
Value $15.04
Growth  +655.8%
Annual growth 4.5%

5105 Pneumatic Piston Cylinder 64 mm Yellow

Theme / Subtheme Service Packs / Technic
Year 1987
Pieces 1
Availability Retired
5105 LEGO Technic Pneumatic Piston Cylinder 64 mm Yellow
Retail $2.49
Value $16.28
Growth  +553.8%
Annual growth 4.9%

5106 Two-Way Valve and Non-Return Valve

Theme / Subtheme Service Packs / Technic
Year 1987
Pieces 2
Availability Retired
5106 LEGO Technic Two-Way Valve and Non-Return Valve
Retail $3.49
Value $21.71
Growth  +522.1%
Annual growth 3.3%