In 1989, LEGO released 9 Service Packs Technic sets, all of these sets have been retired. For that year, the total price of all retail sets cost $31, today those sets are valued around $103, a growth of 231%.
Most valuable 1989 LEGO Service Packs Technic set
5266 Gear Racks, Gear Wheels and Pulley Wheels $22.45
Highest growth 1989 Service Packs Technic set
5109 Pneumatic Tubing and T-Junctions +414.46%
Largest 1989 LEGO Service Packs Technic set
5264 Rotors and Bush / Cross Axles 24 pieces
Most owned 1989 Service Packs Technic set
5108 Double-Acting Pneumatic Piston Cylinder 48 mm
9 sets

5107 Pneumatic Pump Cylinder 48 mm

Theme / Subtheme Service Packs / Technic
Year 1989
Pieces 1
Availability Retired
5107 LEGO Technic Pneumatic Pump Cylinder 48 mm
Retail $3.25
Value $14.19
Growth  +336.6%
Annual growth 4.0%

5108 Double-Acting Pneumatic Piston Cylinder 48 mm

Theme / Subtheme Service Packs / Technic
Year 1989
Pieces 1
Availability Retired
5108 LEGO Technic Double-Acting Pneumatic Piston Cylinder 48 mm
Retail $2.99
Value $15.02
Growth  +402.3%
Annual growth 4.5%

5109 Pneumatic Tubing and T-Junctions

Theme / Subtheme Service Packs / Technic
Year 1989
Pieces 6
Availability Retired
5109 LEGO Technic Pneumatic Tubing and T-Junctions
Retail $3.25
Value $16.72
Growth  +414.5%
Annual growth 3.1%

5251 Shock Absorbers Small

Theme / Subtheme Service Packs / Technic
Year 1989
Pieces 4
Availability Retired
5251 LEGO Technic Shock Absorbers Small
Retail $5.25
Value $10.13
Growth  +93.0%
Annual growth 1.8%

5253 Cross Axles Sizes 2, 3, 4, 6

Theme / Subtheme Service Packs / Technic
Year 1989
Pieces 12
Availability Retired
5253 LEGO Technic Cross Axles Sizes 2, 3, 4, 6
Retail $2.25
Value $2.67
Growth  +18.7%
Annual growth 2.1%

5254 Cross Axles Sizes 8, 10, 12

Theme / Subtheme Service Packs / Technic
Year 1989
Pieces 9
Availability Retired
5254 LEGO Technic Cross Axles Sizes 8, 10, 12
Retail $2.99
Value $7.88
Growth  +163.5%
Annual growth 3.4%

5256 Suspension Pack

Theme / Subtheme Service Packs / Technic
Year 1989
Pieces 12
Availability Retired
5256 LEGO Technic Suspension Pack
Retail $2.99
Value $10.10
Growth  +237.8%
Annual growth 6.2%

5264 Rotors and Bush / Cross Axles

Theme / Subtheme Service Packs / Technic
Year 1989
Pieces 24
Availability Retired
5264 LEGO Technic Rotors and Bush / Cross Axles
Retail $2.25
Value $3.99
Growth  +77.3%
Annual growth 1.4%

5266 Gear Racks, Gear Wheels and Pulley Wheels

Theme / Subtheme Service Packs / Technic
Year 1989
Pieces 22
Availability Retired
5266 LEGO Technic Gear Racks, Gear Wheels and Pulley Wheels
Retail $5.99
Value $22.45
Growth  +274.8%
Annual growth 4.6%