In 1996, LEGO released 7 Duplo Building Sets sets, all of these sets have been retired. For that year, the total price of all retail sets cost $68, today those sets are valued around $309, a growth of 354%.
Most valuable 1996 LEGO Duplo Building Sets set
1751 Small Bulk Bucket $92.97
Largest 1996 LEGO Duplo Building Sets set
1797 Bonus Bucket 90 pieces
7 sets

1751 Small Bulk Bucket

Theme / Subtheme Duplo / Building Sets
Year 1996
Pieces / Duplo figures 27 / 1
Availability Retired
1751 LEGO Duplo Small Bulk Bucket
Retail $5.99
Value $92.97
Growth  +1452.1%
Annual growth 9.6%

1753 Medium Bulk Bucket

Theme / Subtheme Duplo / Building Sets
Year 1996
Pieces / Duplo figures 47 / 1
Availability Retired
1753 LEGO Duplo Medium Bulk Bucket
Retail $9.99
Value $82.60
Growth  +726.8%
Annual growth 7.3%

1784 Animals Bulk Box

Theme / Subtheme Duplo / Building Sets
Year 1996
Pieces 21
Availability Retired
1784 LEGO Duplo Animals Bulk Box
Retail $4.99
Value $23.88
Growth  +378.6%
Annual growth 5.4%

1797 Bonus Bucket

Theme / Subtheme Duplo / Building Sets
Year 1996
Pieces 90
Availability Retired
1797 LEGO Duplo Bonus Bucket
Retail $19.99
Value $31.88
Growth  +59.5%
Annual growth 1.6%

1861 Box of Bricks

Theme / Subtheme Duplo / Building Sets
Year 1996
Pieces 49
Availability Retired
1861 LEGO Duplo Box of Bricks
Retail $8.99
Value $39.60
Growth  +340.5%
Annual growth 5.1%

2321 Happy Birthday Building Set

Theme / Subtheme Duplo / Building Sets
Year 1996
Pieces / Duplo figures 32 / 1
Availability Retired
2321 LEGO Duplo Happy Birthday Building Set
Retail $7.99
Value $23.08
Growth  +188.9%
Annual growth 4.7%

2339 Basic Box

Theme / Subtheme Duplo / Building Sets
Year 1996
Pieces 49
Availability Retired
2339 LEGO Duplo Basic Box
Retail $9.99
Value $14.60
Growth  +46.1%
Annual growth 1.3%