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 $411, a growth of 194%.
Most valuable 2014 LEGO Duplo Building Sets set
10571 All-in-One-Box-of-Fun Pink $161.26
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 $161.26
Growth  +437.7%
Annual growth 10.6%

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 $119.99
Growth  +300.1%
Annual growth 8.7%

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 $71.25
Growth  +137.6%
Annual growth 4.2%

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 $58.49
Growth  +17.0%
Annual growth 2.5%