In 2005, LEGO released 7 Duplo Trains sets, all of these sets have been retired. For that year, the total price of all retail sets cost $205, today those sets are valued around $880, a growth of 329%.
Most valuable 2005 LEGO Duplo Trains set
3774 Bridge $209.00
Highest growth 2005 Duplo Trains set
3770 My First Train +1506.61%
Largest 2005 LEGO Duplo Trains set
3772 Deluxe Train Set 110 pieces
7 sets

3770 My First Train

Theme / Subtheme Duplo / Trains
Year 2005
Pieces / Duplo figures 12 / 1
Availability Retired
3770 LEGO Duplo My First Train
Retail $9.99
Value $160.50
Growth  +1506.6%
Annual growth 8.2%

3771 Train Starter Set

Theme / Subtheme Duplo / Trains
Year 2005
Pieces / Duplo figures 65 / 2
Availability Retired
3771 LEGO Duplo Train Starter Set
Retail $49.99
Value $103.77
Growth  +107.6%
Annual growth 10.1%

3772 Deluxe Train Set

Theme / Subtheme Duplo / Trains
Year 2005
Pieces / Duplo figures 110 / 3
Availability Retired
3772 LEGO Duplo Deluxe Train Set
Retail $89.99
Value $183.75
Growth  +104.2%
Annual growth 8.9%

3773 Level Crossing

Theme / Subtheme Duplo / Trains
Year 2005
Pieces 14
Availability Retired
3773 LEGO Duplo Trains Level Crossing
Retail $7.99
Value $75.70
Growth  +847.4%
Annual growth 11.3%

3774 Bridge

Theme / Subtheme Duplo / Trains
Year 2005
Pieces 26
Availability Retired
3774 LEGO Duplo Trains Bridge
Retail $19.99
Value $209.00
Growth  +945.5%
Annual growth 9.9%

3775 Points

Theme / Subtheme Duplo / Trains
Year 2005
Pieces 2
Availability Retired
3775 LEGO Duplo Trains Points
Retail $6.99
Value $42.21
Growth  +503.9%
Annual growth 9.1%

3778 Station

Theme / Subtheme Duplo / Trains
Year 2005
Pieces / Duplo figures 46 / 2
Availability Retired
3778 LEGO Duplo Trains Station
Retail $19.99
Value $104.72
Growth  +423.9%
Annual growth 4.8%