In 2018, LEGO released 44 BrickHeadz sets across 8 subthemes, all of these sets have been retired. Subthemes for that year included DC Comics Super Heroes, Disney, Marvel Super Heroes, Miscellaneous, Promotional, Seasonal, Star Wars, and Wizarding World. For that year, the total price of all retail sets cost $610, today those sets are valued around $2,674, a growth of 339%.
Most valuable 2018 LEGO BrickHeadz set
66591 2-in-1 Bundle Han Solo & Chewbacca $321.62
Largest 2018 LEGO BrickHeadz set
41597 Go Brick Me 708 pieces
Most owned 2018 BrickHeadz set
40274 Mr. & Mrs. Claus
44 sets

40270 Valentine's Bee

Theme / Subtheme BrickHeadz / Seasonal
Year 2018
Pieces 140
Availability Retired
40270 LEGO BrickHeadz Valentine's Bee
Retail $9.99
Value $19.99
Growth  +100.1%
Annual growth 5.5%

40271 Bunny

Theme / Subtheme BrickHeadz / Seasonal
Year 2018
Pieces 126
Availability Retired
40271 LEGO BrickHeadz Bunny
Retail $9.99
Value $13.53
Growth  +35.4%
Annual growth 5.6%

40272 Witch

Theme / Subtheme BrickHeadz / Seasonal
Year 2018
Pieces 151
Availability Retired
40272 LEGO BrickHeadz Witch
Retail $9.99
Value $14.38
Growth  +43.9%
Annual growth 6.0%

40273 Turkey

Theme / Subtheme BrickHeadz / Seasonal
Year 2018
Pieces 114
Availability Retired
40273 LEGO BrickHeadz Turkey
Retail $9.99
Value $17.34
Growth  +73.6%
Annual growth 11.0%

40274 Mr. & Mrs. Claus

Theme / Subtheme BrickHeadz / Seasonal
Year 2018
Pieces 341
Availability Retired
40274 LEGO BrickHeadz Mr. & Mrs. Claus
Retail $19.99
Value $29.25
Growth  +46.3%
Annual growth 6.5%

41489 Rey & Kylo Ren

Theme / Subtheme BrickHeadz / Star Wars
Year 2018
Pieces 249
Availability Retired
41489 LEGO BrickHeadz Star Wars Rey & Kylo Ren
Retail $19.99
Value $38.16
Growth  +90.9%
Annual growth 6.2%

41597 Go Brick Me

Theme BrickHeadz
Year 2018
Pieces 708
Availability Retired
41597 LEGO BrickHeadz Go Brick Me
Retail $29.99
Value $59.95
Growth  +99.9%
Annual growth 6.2%

41598 The Flash

Theme / Subtheme BrickHeadz / DC Comics Super Heroes
Year 2018
Pieces 122
Availability Retired
41598 LEGO BrickHeadz DC Comics Super Heroes The Flash
Retail $9.99
Value $38.78
Growth  +288.2%
Annual growth 9.0%

41599 Wonder Woman

Theme / Subtheme BrickHeadz / DC Comics Super Heroes
Year 2018
Pieces 143
Availability Retired
41599 LEGO BrickHeadz DC Comics Super Heroes Wonder Woman
Retail $9.99
Value $28.92
Growth  +189.5%
Annual growth 14.8%

41600 Aquaman

Theme / Subtheme BrickHeadz / DC Comics Super Heroes
Year 2018
Pieces 135
Availability Retired
41600 LEGO BrickHeadz DC Comics Super Heroes Aquaman
Retail $9.99
Value $20.83
Growth  +108.5%
Annual growth 6.9%

41601 Cyborg

Theme / Subtheme BrickHeadz / DC Comics Super Heroes
Year 2018
Pieces 108
Availability Retired
41601 LEGO BrickHeadz DC Comics Super Heroes Cyborg
Retail $9.99
Value $19.29
Growth  +93.1%
Annual growth 9.1%

41602 Rey

Theme / Subtheme BrickHeadz / Star Wars
Year 2018
Pieces 119
Availability Retired
41602 LEGO BrickHeadz Star Wars Rey
Retail $9.99
Value $17.22
Growth  +72.4%
Annual growth 7.1%

41603 Kylo Ren

Theme / Subtheme BrickHeadz / Star Wars
Year 2018
Pieces 130
Availability Retired
41603 LEGO BrickHeadz Star Wars Kylo Ren
Retail $9.99
Value $29.41
Growth  +194.4%
Annual growth 9.7%

41604 Iron Man MK50

Theme / Subtheme BrickHeadz / Marvel Super Heroes
Year 2018
Pieces 101
Availability Retired
41604 LEGO BrickHeadz Marvel Super Heroes Iron Man MK50
Retail $9.99
Value $38.33
Growth  +283.7%
Annual growth 8.4%

41605 Thanos

Theme / Subtheme BrickHeadz / Marvel Super Heroes
Year 2018
Pieces 105
Availability Retired
41605 LEGO BrickHeadz Marvel Super Heroes Thanos
Retail $9.99
Value $38.33
Growth  +283.7%
Annual growth 15.1%

41606 Star-Lord

Theme / Subtheme BrickHeadz / Marvel Super Heroes
Year 2018
Pieces 113
Availability Retired
41606 LEGO BrickHeadz Marvel Super Heroes Star-Lord
Retail $9.99
Value $30.68
Growth  +207.1%
Annual growth 8.4%

41607 Gamora

Theme / Subtheme BrickHeadz / Marvel Super Heroes
Year 2018
Pieces 136
Availability Retired
41607 LEGO BrickHeadz Marvel Super Heroes Gamora
Retail $9.99
Value $26.32
Growth  +163.5%
Annual growth 8.6%

41608 Han Solo

Theme / Subtheme BrickHeadz / Star Wars
Year 2018
Pieces 141
Availability Retired
41608 LEGO BrickHeadz Star Wars Han Solo
Retail $9.99
Value $32.83
Growth  +228.6%
Annual growth 8.4%

41609 Chewbacca

Theme / Subtheme BrickHeadz / Star Wars
Year 2018
Pieces 149
Availability Retired
41609 LEGO BrickHeadz Star Wars Chewbacca
Retail $9.99
Value $58.89
Growth  +489.5%
Annual growth 13.2%

41610 Tactical Batman & Superman

Theme / Subtheme BrickHeadz / DC Comics Super Heroes
Year 2018
Pieces 209
Availability Retired
41610 LEGO BrickHeadz DC Comics Super Heroes Tactical Batman & Superman
Retail $19.99
Value $75.09
Growth  +275.6%
Annual growth 9.0%

41611 Marty McFly & Doc Brown

Theme / Subtheme BrickHeadz / Miscellaneous
Year 2018
Pieces 240
Availability Retired
41611 LEGO BrickHeadz Marty McFly & Doc Brown
Retail $19.99
Value $82.15
Growth  +311.0%
Annual growth 9.8%

41612 Steve & Creeper

Theme / Subtheme BrickHeadz / Miscellaneous
Year 2018
Pieces 160
Availability Retired
41612 LEGO BrickHeadz Steve & Creeper
Retail $19.99
Value $117.54
Growth  +488.0%
Annual growth 14.7%

41613 Mr. Incredible & Frozone

Theme / Subtheme BrickHeadz / Disney
Year 2018
Pieces 160
Availability Retired
41613 LEGO BrickHeadz Disney Mr. Incredible & Frozone
Retail $19.99
Value $44.84
Growth  +124.3%
Annual growth 11.6%

41614 Owen & Blue

Theme / Subtheme BrickHeadz / Miscellaneous
Year 2018
Pieces 234
Availability Retired
41614 LEGO BrickHeadz Owen & Blue
Retail $19.99
Value $30.75
Growth  +53.8%
Annual growth 5.8%

41615 Harry Potter & Hedwig

Theme / Subtheme BrickHeadz / Wizarding World
Year 2018
Pieces 180
Availability Retired
41615 LEGO BrickHeadz Wizarding World Harry Potter & Hedwig
Retail $14.99
Value $49.70
Growth  +231.6%
Annual growth 10.4%

41616 Hermione Granger

Theme / Subtheme BrickHeadz / Wizarding World
Year 2018
Pieces 127
Availability Retired
41616 LEGO BrickHeadz Wizarding World Hermione Granger
Retail $9.99
Value $38.32
Growth  +283.6%
Annual growth 8.8%

41617 Elsa

Theme / Subtheme BrickHeadz / Disney
Year 2018
Pieces 130
Availability Retired
41617 LEGO BrickHeadz Disney Elsa
Retail $9.99
Value $33.37
Growth  +234.0%
Annual growth 11.2%

41618 Anna & Olaf

Theme / Subtheme BrickHeadz / Disney
Year 2018
Pieces 201
Availability Retired
41618 LEGO BrickHeadz Disney Anna & Olaf
Retail $14.99
Value $46.47
Growth  +210.0%
Annual growth 7.5%

41619 Darth Vader

Theme / Subtheme BrickHeadz / Star Wars
Year 2018
Pieces 104
Availability Retired
41619 LEGO BrickHeadz Star Wars Darth Vader
Retail $9.99
Value $36.46
Growth  +265.0%
Annual growth 9.2%

41620 Stormtrooper

Theme / Subtheme BrickHeadz / Star Wars
Year 2018
Pieces 124
Availability Retired
41620 LEGO BrickHeadz Star Wars Stormtrooper
Retail $9.99
Value $58.43
Growth  +484.9%
Annual growth 13.1%

41621 Ron Weasley & Albus Dumbledore

Theme / Subtheme BrickHeadz / Wizarding World
Year 2018
Pieces 245
Availability Retired
41621 LEGO BrickHeadz Wizarding World Ron Weasley & Albus Dumbledore
Retail $19.99
Value $75.48
Growth  +277.6%
Annual growth 10.2%

41622 Peter Venkman & Slimer

Theme / Subtheme BrickHeadz / Miscellaneous
Year 2018
Pieces 228
Availability Retired
41622 LEGO BrickHeadz Peter Venkman & Slimer
Retail $19.99
Value $83.08
Growth  +315.6%
Annual growth 9.3%

41623 Ariel & Ursula

Theme / Subtheme BrickHeadz / Disney
Year 2018
Pieces 361
Availability Retired
41623 LEGO BrickHeadz Disney Ariel & Ursula
Retail $19.99
Value $111.63
Growth  +458.4%
Annual growth 15.1%

41624 Mickey Mouse

Theme / Subtheme BrickHeadz / Disney
Year 2018
Pieces 109
Availability Retired
41624 LEGO BrickHeadz Disney Mickey Mouse
Retail $9.99
Value $89.13
Growth  +792.2%
Annual growth 15.6%

41625 Minnie Mouse

Theme / Subtheme BrickHeadz / Disney
Year 2018
Pieces 129
Availability Retired
41625 LEGO BrickHeadz Disney Minnie Mouse
Retail $9.99
Value $89.99
Growth  +800.8%
Annual growth 19.5%

41626 Groot & Rocket

Theme / Subtheme BrickHeadz / Marvel Super Heroes
Year 2018
Pieces 189
Availability Retired
41626 LEGO BrickHeadz Marvel Super Heroes Groot & Rocket
Retail $14.99
Value $59.35
Growth  +295.9%
Annual growth 18.4%

41627 Luke & Yoda

Theme / Subtheme BrickHeadz / Star Wars
Year 2018
Pieces 215
Availability Retired
41627 LEGO BrickHeadz Star Wars Luke & Yoda
Retail $14.99
Value $69.72
Growth  +365.1%
Annual growth 11.8%

41628 Princess Leia

Theme / Subtheme BrickHeadz / Star Wars
Year 2018
Pieces 124
Availability Retired
41628 LEGO BrickHeadz Star Wars Princess Leia
Retail $9.99
Value $45.64
Growth  +356.9%
Annual growth 14.4%

41629 Boba Fett

Theme / Subtheme BrickHeadz / Star Wars
Year 2018
Pieces 161
Availability Retired
41629 LEGO BrickHeadz Star Wars Boba Fett
Retail $9.99
Value $81.59
Growth  +716.7%
Annual growth 14.4%

41630 Jack Skellington & Sally

Theme / Subtheme BrickHeadz / Disney
Year 2018
Pieces 193
Availability Retired
41630 LEGO BrickHeadz Disney Jack Skellington & Sally
Retail $19.99
Value $129.98
Growth  +550.2%
Annual growth 13.1%

41631 Newt Scamander & Gellert Grindelwald

Theme / Subtheme BrickHeadz / Wizarding World
Year 2018
Pieces 247
Availability Retired
41631 LEGO BrickHeadz Wizarding World Newt Scamander & Gellert Grindelwald
Retail $19.99
Value $58.79
Growth  +194.1%
Annual growth 9.3%

41632 Homer Simpson & Krusty the Clown

Theme / Subtheme BrickHeadz / Miscellaneous
Year 2018
Pieces 215
Availability Retired
41632 LEGO BrickHeadz Homer Simpson & Krusty the Clown
Retail $19.99
Value $94.99
Growth  +375.2%
Annual growth 12.1%

66591 2-in-1 Bundle Han Solo & Chewbacca

Theme BrickHeadz
Year 2018
Pieces 290
Availability Retired
66591 LEGO BrickHeadz 2-in-1 Bundle Han Solo & Chewbacca
Retail $19.99
Value $321.62
Growth  +1508.9%
Annual growth 23.8%

Shimao BrickHeadz

Theme / Subtheme BrickHeadz / Promotional
Year 2018
Pieces 110
Availability Retired
LEGO Shimao BrickHeadz
promotional
Value $177.00
Annual growth 5.6%