In 2011, LEGO released 2 Seasonal Easter sets, all of these sets have been retired. For that year, the total price of all retail sets cost $10, today those sets are valued around $37, a growth of 266%.
Most valuable 2011 LEGO Seasonal Easter set
40018 Easter Bunny $20.38
Most owned 2011 Seasonal Easter set
40017 Easter Basket
2 sets

40017 Easter Basket

Theme / Subtheme Seasonal / Easter
Year 2011
Pieces 86
Availability Retired
40017 LEGO Easter Basket
Retail $4.99
Value $16.14
Growth  +223.4%
Annual growth 5.7%

40018 Easter Bunny

Theme / Subtheme Seasonal / Easter
Year 2011
Pieces 95
Availability Retired
40018 LEGO Easter Bunny
Retail $4.99
Value $20.38
Growth  +308.4%
Annual growth 9.0%