In 2014, LEGO released 4 Duplo Building Sets sets, all of these sets have been retired. For that year, the total price of all retail sets cost $140, today those sets are valued around $332, a growth of 138%.
Most valuable 2014 LEGO Duplo Building Sets set
10571 All-in-One-Box-of-Fun Pink $116.46
Largest 2014 LEGO Duplo Building Sets set
10580 Deluxe Box of Fun 95 pieces
Most owned 2014 Duplo Building Sets set
10572 All-in-One-Box-of-Fun
4 sets

10571 All-in-One-Box-of-Fun Pink

Theme / Subtheme Duplo / Building Sets
Year 2014
Pieces / Duplo figures 65 / 1
Availability Retired
10571 LEGO Duplo All-in-One-Box-of-Fun Pink
Retail $29.99
Value $116.46
Growth  +288.3%
Annual growth 10.5%

10572 All-in-One-Box-of-Fun

Theme / Subtheme Duplo / Building Sets
Year 2014
Pieces / Duplo figures 65 / 1
Availability Retired
10572 LEGO Duplo All-in-One-Box-of-Fun
Retail $29.99
Value $88.07
Growth  +193.7%
Annual growth 8.1%

10575 Creative Building Cube

Theme / Subtheme Duplo / Building Sets
Year 2014
Pieces 75
Availability Retired
10575 LEGO Duplo Creative Building Cube
Retail $29.99
Value $65.45
Growth  +118.2%
Annual growth 4.4%

10580 Deluxe Box of Fun

Theme / Subtheme Duplo / Building Sets
Year 2014
Pieces / Duplo figures 95 / 2
Availability Retired
10580 LEGO Duplo Deluxe Box of Fun
Retail $49.99
Value $62.47
Growth  +25.0%
Annual growth 2.3%