In 2018, LEGO released 5 Seasonal Christmas sets, all of these sets have been retired. For that year, the total price of all retail sets cost $16, today those sets are valued around $128, a growth of 701%.
Most valuable 2018 LEGO Seasonal Christmas set
40293 Christmas Carousel $55.00
Highest growth 2018 Seasonal Christmas set
853796 Penguin Holiday Ornament +155.82%
Largest 2018 LEGO Seasonal Christmas set
40292 Buildable Holiday Present 301 pieces
5 sets

40292 Buildable Holiday Present

Theme / Subtheme Seasonal / Christmas
Year 2018
Pieces / Minifigs 301 / 2
Availability Retired
40292 LEGO Christmas Buildable Holiday Present
promotional
Value $26.06
Annual growth 34.4%

40293 Christmas Carousel

Theme / Subtheme Seasonal / Christmas
Year 2018
Pieces 251
Availability Retired
40293 LEGO Christmas Carousel
promotional
Value $55.00
Annual growth 2.8%

853796 Penguin Holiday Ornament

Theme / Subtheme Seasonal / Christmas
Year 2018
Pieces 37
Availability Retired
853796 LEGO Christmas Penguin Holiday Ornament
Retail $7.99
Value $20.44
Growth  +155.8%
Annual growth 10.2%

853815 Gifts Holiday Ornament

Theme / Subtheme Seasonal / Christmas
Year 2018
Pieces 50
Availability Retired
853815 LEGO Christmas Gifts Holiday Ornament
Retail $7.99
Value $20.00
Growth  +150.3%
Annual growth 8.2%

5005253 Christmas Ornament 2018 Reindeer Head

Theme / Subtheme Seasonal / Christmas
Year 2018
Pieces 28
Availability Retired
5005253 LEGO Christmas Ornament 2018 Reindeer Head
promotional
Value $6.47
Annual growth 5.1%