In 1997, 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 $79, today those sets are valued around $324, a growth of 311%.
Most valuable 1997 LEGO Duplo Building Sets set
2266 Extra Large Value Bucket $78.42
Highest growth 1997 Duplo Building Sets set
2245 Farmhouse Bucket +602.50%
Most owned 1997 Duplo Building Sets set
2264 Medium Bucket
7 sets

2124 Green Bucket

Theme / Subtheme Duplo / Building Sets
Year 1997
Pieces / Duplo figures 39 / 1
Availability Retired
2124 LEGO Duplo Green Bucket
Retail $7.99
Value $11.41
Growth  +42.8%
Annual growth 1.2%

2125 Large Bucket

Theme / Subtheme Duplo / Building Sets
Year 1997
Pieces / Duplo figures 70 / 1
Availability Retired
2125 LEGO Duplo Large Bucket
Retail $12.99
Value $38.54
Growth  +196.7%
Annual growth 6.0%

2245 Farmhouse Bucket

Theme / Subtheme Duplo / Building Sets
Year 1997
Pieces / Duplo figures 46 / 1
Availability Retired
2245 LEGO Duplo Farmhouse Bucket
Retail $9.99
Value $70.18
Growth  +602.5%
Annual growth 7.0%

2264 Medium Bucket

Theme / Subtheme Duplo / Building Sets
Year 1997
Pieces / Duplo figures 48 / 1
Availability Retired
2264 LEGO Duplo Medium Bucket
Retail $9.99
Value $44.76
Growth  +348.0%
Annual growth 5.3%

2266 Extra Large Value Bucket

Theme / Subtheme Duplo / Building Sets
Year 1997
Pieces / Duplo figures 91 / 2
Availability Retired
2266 LEGO Duplo Extra Large Value Bucket
Retail $19.99
Value $78.42
Growth  +292.3%
Annual growth 4.8%

2851 Medium Dino Bucket

Theme / Subtheme Duplo / Building Sets
Year 1997
Pieces / Duplo figures 31 / 1
Availability Retired
2851 LEGO Duplo Medium Dino Bucket
Retail $7.99
Value $20.64
Growth  +158.3%
Annual growth 3.7%

2852 Large Dino Bucket

Theme / Subtheme Duplo / Building Sets
Year 1997
Pieces / Duplo figures 57 / 2
Availability Retired
2852 LEGO Duplo Large Dino Bucket
Retail $9.99
Value $60.23
Growth  +502.9%
Annual growth 6.4%