In 2009, LEGO released 2 SpongeBob SquarePants sets, all of these sets have been retired. For that year, the total price of all retail sets cost $65, today those sets are valued around $769, a growth of 1083%.
Most valuable 2009 SpongeBob SquarePants set
3834 Good Neighbours at Bikini Bottom $468.66
Highest growth 2009 SpongeBob SquarePants set
3833 Krusty Krab Adventures +1100.48%
2 sets

3833 Krusty Krab Adventures

Theme SpongeBob SquarePants
Year 2009
Pieces / Minifigs 209 / 3
Availability Retired
3833 LEGO SpongeBob SquarePants Krusty Krab Adventures
Retail $24.99
Value $300.00
Growth  +1100.5%
Annual growth 12.6%

3834 Good Neighbours at Bikini Bottom

Theme SpongeBob SquarePants
Year 2009
Pieces / Minifigs 425 / 3
Availability Retired
3834 LEGO SpongeBob SquarePants Good Neighbours at Bikini Bottom
Retail $39.99
Value $468.66
Growth  +1071.9%
Annual growth 11.2%