In 2010, LEGO released 6 Harry Potter sets across 2 subthemes, all of these sets have been retired. Subthemes for that year included Chamber of Secrets and HalfBlood Prince. For that year, the total price of all retail sets cost $341, today those sets are valued around $804, a growth of 136%.
Most valuable 2010 LEGO Harry Potter set
4842 Hogwarts Castle $273.14
Highest growth 2010 Harry Potter set
4736 Freeing Dobby +245.77%
Theme / Subtheme Harry Potter / Chamber of Secrets
Year 2010
Pieces / Minifigs 73 / 3
Availability Retired
4736 LEGO Harry Potter Chamber of Secrets Freeing Dobby
Retail $10.99
Value $38.00
Growth  +245.8%
Annual growth 7.2%
Theme Harry Potter
Year 2010
Pieces / Minifigs 153 / 5
Availability Retired
4737 LEGO Harry Potter Quidditch Match
Retail $19.99
Value $60.39
Growth  +202.1%
Annual growth 6.1%
Theme Harry Potter
Year 2010
Pieces / Minifigs 442 / 4
Availability Retired
4738 LEGO Harry Potter Hagrid's Hut
Retail $39.99
Value $81.06
Growth  +102.7%
Annual growth 7.9%
Theme / Subtheme Harry Potter / Half-Blood Prince
Year 2010
Pieces / Minifigs 568 / 6
Availability Retired
4840 LEGO Harry Potter Half-Blood Prince The Burrow
Retail $59.99
Value $177.52
Growth  +195.9%
Annual growth 14.4%
Theme Harry Potter
Year 2010
Pieces / Minifigs 646 / 5
Availability Retired
4841 LEGO Harry Potter Hogwarts Express
Retail $79.99
Value $174.26
Growth  +117.9%
Annual growth 7.4%
Theme Harry Potter
Year 2010
Pieces / Minifigs 1,290 / 11
Availability Retired
4842 LEGO Harry Potter Hogwarts Castle
Retail $129.99
Value $273.14
Growth  +110.1%
Annual growth 5.9%