In 2008, LEGO released 30 Duplo sets across 7 subthemes, all of these sets have been retired. Subthemes for that year included Building Sets, Castle, Dino, LEGO Ville, My First, Thomas and Friends, and Value Packs. For that year, the total price of all retail sets cost $1,265, today those sets are valued around $5,068, a growth of 301%.
Most valuable 2008 LEGO Duplo set
4864 Castle $603.17
Highest growth 2008 Duplo set
5597 Dino Trap +861.34%
Largest 2008 LEGO Duplo set
5609 Deluxe Train Set 116 pieces
30 sets

4862 Ambush

Theme / Subtheme Duplo / Castle
Year 2008
Pieces / Duplo figures 15 / 2
Availability Retired
4862 LEGO Duplo Castle Ambush
Retail $16.99
Value $39.46
Growth  +132.3%
Annual growth 5.4%

4863 Sentry & Catapult

Theme / Subtheme Duplo / Castle
Year 2008
Pieces / Duplo figures 41 / 2
Availability Retired
4863 LEGO Duplo Castle Sentry & Catapult
Retail $24.99
Value $89.81
Growth  +259.4%
Annual growth 8.0%

4864 Castle

Theme / Subtheme Duplo / Castle
Year 2008
Pieces / Duplo figures 115 / 3
Availability Retired
4864 LEGO Duplo Castle
Retail $79.99
Value $603.17
Growth  +654.1%
Annual growth 8.7%

5380-2 Large Brick Box Green Plate

Theme / Subtheme Duplo / Building Sets
Year 2008
Pieces / Duplo figures 71 / 1
Availability Retired
5380-2 LEGO Duplo Large Brick Box Green Plate
Retail $29.99
Value $57.77
Growth  +92.6%
Annual growth 3.9%

5543 Percy at the Sheds

Theme / Subtheme Duplo / Thomas and Friends
Year 2008
Pieces / Duplo figures 34 / 1
Availability Retired
5543 LEGO Duplo Thomas and Friends Percy at the Sheds
Retail $19.99
Value $170.15
Growth  +751.2%
Annual growth 7.3%

5544 Thomas Starter Set

Theme / Subtheme Duplo / Thomas and Friends
Year 2008
Pieces / Duplo figures 82 / 1
Availability Retired
5544 LEGO Duplo Thomas and Friends Thomas Starter Set
Retail $49.99
Value $229.11
Growth  +358.3%
Annual growth 10.7%

5572 LEGO DUPLO Build & Play

Theme Duplo
Year 2008
Pieces / Duplo figures 100 / 1
Availability Retired
5572 LEGO DUPLO Build & Play
Retail $44.99
Value $81.85
Growth  +81.9%
Annual growth 2.5%

5575 Basic Bricks Medium

Theme Duplo
Year 2008
Pieces 45
Availability Retired
5575 LEGO Duplo Basic Bricks Medium
Retail $14.99
Value $26.58
Growth  +77.3%
Annual growth 3.6%

5577 Basic Bricks Large

Theme Duplo
Year 2008
Pieces 65
Availability Retired
5577 LEGO Duplo Basic Bricks Large
Retail $16.99
Value $60.77
Growth  +257.7%
Annual growth 8.0%

5583 Fun with Wheels

Theme Duplo
Year 2008
Pieces 78
Availability Retired
5583 LEGO Duplo Fun with Wheels
Retail $29.99
Value $59.69
Growth  +99.0%
Annual growth 4.4%

5593 Circus

Theme / Subtheme Duplo / LEGO Ville
Year 2008
Pieces / Duplo figures 61 / 3
Availability Retired
5593 Duplo LEGO Ville Circus
Retail $49.99
Value $88.51
Growth  +77.1%
Annual growth 3.6%

5596 Dino Birthday

Theme / Subtheme Duplo / Dino
Year 2008
Pieces 9
Availability Retired
5596 LEGO Duplo Dino Birthday
Retail $12.99
Value $55.87
Growth  +330.1%
Annual growth 4.8%

5597 Dino Trap

Theme / Subtheme Duplo / Dino
Year 2008
Pieces / Duplo figures 28 / 1
Availability Retired
5597 LEGO Duplo Dino Trap
Retail $24.99
Value $240.24
Growth  +861.3%
Annual growth 10.7%

5598 Dino Valley

Theme / Subtheme Duplo / Dino
Year 2008
Pieces / Duplo figures 52 / 3
Availability Retired
5598 LEGO Duplo Dino Valley
Retail $49.99
Value $226.60
Growth  +353.3%
Annual growth 6.7%

5601 Fire Station

Theme / Subtheme Duplo / LEGO Ville
Year 2008
Pieces / Duplo figures 72 / 3
Availability Retired
5601 Duplo LEGO Ville Fire Station
Retail $59.99
Value $318.01
Growth  +430.1%
Annual growth 7.6%

5602 Police Station

Theme / Subtheme Duplo / LEGO Ville
Year 2008
Pieces / Duplo figures 28 / 2
Availability Retired
5602 Duplo LEGO Ville Police Station
Retail $39.99
Value $156.51
Growth  +291.4%
Annual growth 7.9%

5603 Fire Chief

Theme / Subtheme Duplo / LEGO Ville
Year 2008
Pieces / Duplo figures 7 / 1
Availability Retired
5603 Duplo LEGO Ville Fire Chief
Retail $8.99
Value $21.90
Growth  +143.6%
Annual growth 3.2%

5604 Supermarket

Theme / Subtheme Duplo / LEGO Ville
Year 2008
Pieces / Duplo figures 62 / 2
Availability Retired
5604 Duplo LEGO Ville Supermarket
Retail $39.99
Value $72.03
Growth  +80.1%
Annual growth 2.5%

5605 Tanker Truck

Theme / Subtheme Duplo / LEGO Ville
Year 2008
Pieces / Duplo figures 17 / 1
Availability Retired
5605 Duplo LEGO Ville Tanker Truck
Retail $24.99
Value $109.56
Growth  +338.4%
Annual growth 5.8%

5606 My First Train

Theme / Subtheme Duplo / LEGO Ville
Year 2008
Pieces / Duplo figures 10 / 1
Availability Retired
5606 Duplo LEGO Ville My First Train
Retail $16.99
Value $49.99
Growth  +194.2%
Annual growth 6.9%

5607 Track Repair Train

Theme / Subtheme Duplo / LEGO Ville
Year 2008
Pieces / Duplo figures 16 / 1
Availability Retired
5607 Duplo LEGO Ville Track Repair Train
Retail $16.99
Value $42.83
Growth  +152.1%
Annual growth 3.8%

5608 Train Starter Set

Theme / Subtheme Duplo / LEGO Ville
Year 2008
Pieces / Duplo figures 64 / 3
Availability Retired
5608 Duplo LEGO Ville Train Starter Set
Retail $59.99
Value $149.47
Growth  +149.2%
Annual growth 9.8%

5609 Deluxe Train Set

Theme / Subtheme Duplo / LEGO Ville
Year 2008
Pieces / Duplo figures 116 / 3
Availability Retired
5609 Duplo LEGO Ville Deluxe Train Set
Retail $119.99
Value $558.00
Growth  +365.0%
Annual growth 9.0%

6176 Basic Bricks Deluxe

Theme Duplo
Year 2008
Pieces 80
Availability Retired
6176 LEGO Duplo Basic Bricks Deluxe
Retail $19.99
Value $51.13
Growth  +155.8%
Annual growth 7.7%

6178 My Town

Theme / Subtheme Duplo / My First
Year 2008
Pieces / Duplo figures 79 / 1
Availability Retired
6178 LEGO Duplo My First My Town
Retail $29.99
Value $68.00
Growth  +126.7%
Annual growth 5.3%

66236 Build & Play Value Pack

Theme / Subtheme Duplo / Value Packs
Year 2008
Pieces 145
Availability Retired
66236 LEGO Duplo Build & Play Value Pack
Retail $59.99
Value $113.69
Growth  +89.5%
Annual growth 3.8%

66261 Duplo LEGOVille Value Pack

Theme / Subtheme Duplo / Value Packs
Year 2008
Pieces 70
Availability Retired
66261 Duplo LEGOVille Value Pack
Retail $59.99
Value $389.39
Growth  +549.1%
Annual growth 11.6%

66262 Super Pack 3-in-1

Theme / Subtheme Duplo / Value Packs
Year 2008
Pieces 42
Availability Retired
66262 LEGO Duplo Super Pack 3-in-1
Retail $59.99
Value $389.39
Growth  +549.1%
Annual growth 11.6%

66264 Super Pack 3-in-1

Theme / Subtheme Duplo / Value Packs
Year 2008
Pieces 135
Availability Retired
66264 LEGO Duplo Super Pack 3-in-1
Retail $99.99
Value $365.46
Growth  +265.5%
Annual growth 7.9%

66361 Duplo Train Super Pack 3-in-1

Theme / Subtheme Duplo / Value Packs
Year 2008
Pieces 64
Availability Retired
66361 LEGO Duplo Train Super Pack 3-in-1
Retail $79.99
Value $182.60
Growth  +128.3%
Annual growth 5.0%