In 2015, LEGO released 2 Duplo Doc McStuffins sets, all of these sets have been retired. For that year, the total price of all retail sets cost $50, today those sets are valued around $121, a growth of 142%.
Most valuable 2015 LEGO Duplo Doc McStuffins set
10606 Doc McStuffins Backyard Clinic $84.07
2 sets

10605 Doc McStuffins Rosie the Ambulance

Theme / Subtheme Duplo / Doc McStuffins
Year 2015
Pieces / Duplo figures 16 / 1
Availability Retired
10605 LEGO Duplo Doc McStuffins Rosie the Ambulance
Retail $19.99
Value $36.65
Growth  +83.3%
Annual growth 5.6%

10606 Doc McStuffins Backyard Clinic

Theme / Subtheme Duplo / Doc McStuffins
Year 2015
Pieces / Duplo figures 39 / 1
Availability Retired
10606 LEGO Duplo Doc McStuffins Backyard Clinic
Retail $29.99
Value $84.07
Growth  +180.3%
Annual growth 8.7%