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 $119, a growth of 565%.
Most valuable 1987 LEGO Service Packs Technic set
1346 Touch Sensors, 4.5V $31.85
Highest growth 1987 Service Packs Technic set
5102 Pneumatic Tube Black and Grey 60 and 100 cm +1086.93%
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 $31.85
Growth  +431.7%
Annual growth 3.4%

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 $23.62
Growth  +1086.9%
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 $8.71
Growth  +337.7%
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 $13.59
Growth  +582.9%
Annual growth 4.2%

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 $19.33
Growth  +676.3%
Annual growth 5.4%

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 $22.19
Growth  +535.8%
Annual growth 3.3%