In 2004, LEGO released 2 Duplo Building Sets sets, all of these sets have been retired. For that year, the total price of all retail sets cost $33.
Most valuable 2004 LEGO Duplo Building Sets set
5385 Special Edition Bucket $25.42
Largest 2004 LEGO Duplo Building Sets set
5351 Duplo Bucket 90 pieces
Theme / Subtheme Duplo / Building Sets
Year 2004
Pieces 90
Availability Retired
5351 LEGO Duplo Bucket
Retail $19.99
Theme / Subtheme Duplo / Building Sets
Year 2004
Pieces 40
Availability Retired
5385 LEGO Duplo Special Edition Bucket
Retail $12.99
Value $25.42
Growth  95.7%
Annual growth 3.4%