In 1998, LEGO released 21 Service Packs sets across 10 subthemes, all of these sets have been retired. Subthemes for that year included Adventurers, Aquazone, Belville, Castle, Divers, Duplo, Primo, Scala, Space, and Technic. For that year, the total price of all retail sets cost $137, today those sets are valued around $624.
Most valuable 1998 LEGO Service Packs set
5400 LEGO Scala Fashion Accessories $148.13
Largest 1998 LEGO Service Packs set
5294 Toggle Joints and Connectors 60 pieces
Most owned 1998 Service Packs set
5225 Technic Geared Motor
Theme / Subtheme Service Packs / Primo
Year 1998
Pieces 4
Availability Retired
5022 LEGO Primo / Duplo Converter Bricks
Retail $3.99
Value $37.27
Growth  +834.1%
Annual growth 8.6%
Theme / Subtheme Service Packs / Duplo
Year 1998
Pieces 4
Availability Retired
5023 LEGO Duplo Farm Fences
Retail $1.99
Value $6.37
Growth  +220.1%
Annual growth 4.4%
Theme / Subtheme Service Packs / Technic
Year 1998
Pieces 1
Availability Retired
5225 LEGO Technic Geared Motor
Retail $15.75
Value $22.99
Growth  +46.0%
Annual growth 2.8%
Theme / Subtheme Service Packs / Technic
Year 1998
Pieces 18
Availability Retired
5226 LEGO Technic Assorted Cross Axles
Retail $3.99
Value $5.62
Growth  +40.9%
Annual growth 1.3%
Theme / Subtheme Service Packs / Technic
Year 1998
Pieces 60
Availability Retired
5294 LEGO Technic Toggle Joints and Connectors
Retail $3.99
Value $7.34
Growth  +84.0%
Annual growth 3.5%
Theme / Subtheme Service Packs / Technic
Year 1998
Pieces 12
Availability Retired
5295 LEGO Technic Steering Accessories
Retail $3.99
Value $8.63
Growth  +116.3%
Annual growth 2.6%
Theme / Subtheme Service Packs / Adventurers
Year 1998
Pieces 27
Availability Retired
5381 LEGO Adventurers Adventure Accessories
Retail $3.99
Value $51.66
Growth  +1194.7%
Annual growth 7.4%
Theme / Subtheme Service Packs / Aquazone
Year 1998
Pieces 19
Availability Retired
5382 LEGO Aquazone Accessories
Retail $3.99
Value $23.69
Growth  +493.7%
Annual growth 5.9%
Theme / Subtheme Service Packs / Castle
Year 1998
Pieces / Minifigs 34 / 1
Availability Retired
5383 LEGO Castle Accessories
Retail $2.99
Value $43.04
Growth  +1339.5%
Annual growth 7.1%
Theme / Subtheme Service Packs / Space
Year 1998
Pieces 21
Availability Retired
5384 LEGO Space Accessories
Retail $4.49
Value $39.54
Growth  +780.6%
Annual growth 8.7%
Theme Service Packs
Year 1998
Pieces 38
Availability Retired
5386 LEGO Antenna and Control Sticks
Retail $2.99
Value $17.85
Growth  +497.0%
Annual growth 9.2%
Theme / Subtheme Service Packs / Belville
Year 1998
Pieces 13
Availability Retired
5387 LEGO Belville Beach Accessories
Retail $3.49
Value $11.52
Growth  +230.1%
Annual growth 5.1%
Theme Service Packs
Year 1998
Pieces 26
Availability Retired
5388 LEGO Hinges, Couplings, Turntables
Retail $2.99
Value $11.45
Growth  +282.9%
Annual growth 5.1%
Theme / Subtheme Service Packs / Divers
Year 1998
Pieces 37
Availability Retired
5389 LEGO Divers Diving Accessories
Retail $4.49
Value $44.67
Growth  +894.9%
Annual growth 8.2%
Theme Service Packs
Year 1998
Pieces 14
Availability Retired
5390 LEGO Crane and Digger Accessories
Retail $3.99
Value $18.62
Growth  +366.7%
Annual growth 6.1%
Theme / Subtheme Service Packs / Scala
Year 1998
Pieces 12
Availability Retired
5400 LEGO Scala Fashion Accessories
Retail $3.99
Value $148.13
Growth  +3612.5%
Annual growth 9.1%
Theme / Subtheme Service Packs / Scala
Year 1998
Pieces 14
Availability Retired
5401 LEGO Scala Kitchen Accessories
Retail $3.99
Value $29.65
Growth  +643.1%
Annual growth 7.7%
Theme / Subtheme Service Packs / Scala
Year 1998
Pieces 1
Availability Retired
5402 LEGO Scala Floor Plate 17.5x35 cm
Retail $5.99
Theme / Subtheme Service Packs / Scala
Year 1998
Pieces 1
Availability Retired
5403 LEGO Scala Floor Plate 35x35 cm
Retail $9.99
Theme / Subtheme Service Packs / Scala
Year 1998
Pieces 28
Availability Retired
5404 LEGO Scala Basic House
Retail $39.99
Value $86.07
Growth  +115.2%
Annual growth 2.9%
Theme / Subtheme Service Packs / Scala
Year 1998
Pieces 1
Availability Retired
5405 LEGO Scala Floor Plate 17.5x35 cm
Retail $5.99
Value $9.99
Growth  +66.8%
Annual growth 2.0%