In 2018, LEGO released 20 Minifigure Series Series 18 sets, all of these sets have been retired. For that year, the total price of all retail sets cost $375, today those sets are valued around $767, a growth of 104%.
Most valuable 2018 Minifigure Series Series 18 set
Series 18 Sealed Box $432.05
Highest growth 2018 Minifigure Series Series 18 set
Classic Police Officer +460.90%
Largest 2018 Minifigure Series Series 18 set
Birthday Party Girl 9 pieces
Most owned 2018 Minifigure Series Series 18 set
Brick Suit Guy
20 sets

Series 18 Random Bag

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Minifigs 1
Availability Retired
Series 18 Random Bag
Retail $3.99
Value $10.98
Growth  +175.2%
Annual growth 18.5%

Elephant Girl

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 6 / 1
Availability Retired
LEGO Minifigure Series 18 Elephant Girl
Retail $3.99
Value $11.72
Growth  +193.7%
Annual growth 10.4%

Brick Suit Guy

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 5 / 1
Availability Retired
LEGO Minifigure Series 18 Brick Suit Guy
Retail $3.99
Value $5.63
Growth  +41.1%
Annual growth 2.8%

Brick Suit Girl

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 5 / 1
Availability Retired
LEGO Minifigure Series 18 Brick Suit Girl
Retail $3.99
Value $4.42
Growth  +10.8%
Annual growth 1.3%

Party Clown

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 8 / 1
Availability Retired
LEGO Minifigure Series 18 Party Clown
Retail $3.99
Value $10.29
Growth  +157.9%
Annual growth 8.4%

Firework Guy

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 4 / 1
Availability Retired
LEGO Minifigure Series 18 Firework Guy
Retail $3.99
Value $4.74
Growth  +18.8%
Annual growth 2.1%

Birthday Party Girl

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 9 / 1
Availability Retired
LEGO Minifigure Series 18 Birthday Party Girl
Retail $3.99
Value $7.35
Growth  +84.2%
Annual growth 5.4%

Dragon Suit Guy

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 6 / 1
Availability Retired
LEGO Minifigure Series 18 Dragon Suit Guy
Retail $3.99
Value $16.17
Growth  +305.3%
Annual growth 13.9%

Classic Police Officer

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 6 / 1
Availability Retired
LEGO Minifigure Series 18 Classic Police Officer
Retail $3.99
Value $22.38
Growth  +460.9%
Annual growth 12.2%

Spider Suit Boy

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 6 / 1
Availability Retired
LEGO Minifigure Series 18 Spider Suit Boy
Retail $3.99
Value $4.91
Growth  +23.1%
Annual growth 2.0%

Birthday Cake Guy

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 6 / 1
Availability Retired
LEGO Minifigure Series 18 Birthday Cake Guy
Retail $3.99
Value $6.50
Growth  +62.9%
Annual growth 7.5%

Cactus Girl

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 4 / 1
Availability Retired
LEGO Minifigure Series 18 Cactus Girl
Retail $3.99
Value $8.73
Growth  +118.8%
Annual growth 9.5%

Cat Costume Girl

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 6 / 1
Availability Retired
LEGO Minifigure Series 18 Cat Costume Girl
Retail $3.99
Value $6.48
Growth  +62.4%
Annual growth 3.6%

Race Car Guy

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 6 / 1
Availability Retired
LEGO Minifigure Series 18 Race Car Guy
Retail $3.99
Value $8.35
Growth  +109.3%
Annual growth 9.5%

Flower Pot Girl

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 5 / 1
Availability Retired
LEGO Minifigure Series 18 Flower Pot Girl
Retail $3.99
Value $6.65
Growth  +66.7%
Annual growth 4.5%

Cowboy Costume Guy

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 5 / 1
Availability Retired
LEGO Minifigure Series 18 Cowboy Costume Guy
Retail $3.99
Value $5.28
Growth  +32.3%
Annual growth 3.9%

Birthday Party Boy

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 9 / 1
Availability Retired
LEGO Minifigure Series 18 Birthday Party Boy
Retail $3.99
Value $7.28
Growth  +82.5%
Annual growth 7.8%

Unicorn Guy

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Pieces / Minifigs 8 / 1
Availability Retired
LEGO Minifigure Series 18 Unicorn Guy
Retail $3.99
Value $9.49
Growth  +137.8%
Annual growth 11.2%

Series 18 Complete Set

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Minifigs 16
Availability Retired
Series 18 Complete Set
Retail $64.00
Value $177.71
Growth  +177.7%
Annual growth 8.5%

Series 18 Sealed Box

Theme / Subtheme Minifigure Series / Series 18
Year 2018
Minifigs 60
Availability Retired
Series 18 Sealed Box
Retail $239.40
Value $432.05
Growth  +80.5%
Annual growth 6.1%