In 2018, LEGO released 5 BrickHeadz Miscellaneous sets, all of these sets have been retired. For that year, the total price of all retail sets cost $100, today those sets are valued around $418, a growth of 318%.
Most valuable 2018 LEGO BrickHeadz Miscellaneous set
41612 Steve & Creeper $120.00
Largest 2018 LEGO BrickHeadz Miscellaneous set
41611 Marty McFly & Doc Brown 240 pieces
5 sets

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 $75.64
Growth  +278.4%
Annual growth 9.1%

41612 Steve & Creeper

Theme / Subtheme BrickHeadz / Miscellaneous
Year 2018
Pieces 160
Availability Retired
41612 LEGO BrickHeadz Steve & Creeper
Retail $19.99
Value $120.00
Growth  +500.3%
Annual growth 14.6%

41614 Owen & Blue

Theme / Subtheme BrickHeadz / Miscellaneous
Year 2018
Pieces 234
Availability Retired
41614 LEGO BrickHeadz Owen & Blue
Retail $19.99
Value $34.94
Growth  +74.8%
Annual growth 6.5%

41622 Peter Venkman & Slimer

Theme / Subtheme BrickHeadz / Miscellaneous
Year 2018
Pieces 228
Availability Retired
41622 LEGO BrickHeadz Peter Venkman & Slimer
Retail $19.99
Value $86.99
Growth  +335.2%
Annual growth 9.1%

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 $99.99
Growth  +400.2%
Annual growth 12.2%