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 $123, a growth of 670%.
Most valuable 2018 LEGO Seasonal Christmas set
40293 Christmas Carousel $48.67
Highest growth 2018 Seasonal Christmas set
853796 Penguin Holiday Ornament +181.48%
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 $25.97
Annual growth 21.3%

40293 Christmas Carousel

Theme / Subtheme Seasonal / Christmas
Year 2018
Pieces 251
Availability Retired
40293 LEGO Christmas Carousel
promotional
Value $48.67
Annual growth 4.6%

853796 Penguin Holiday Ornament

Theme / Subtheme Seasonal / Christmas
Year 2018
Pieces 37
Availability Retired
853796 LEGO Christmas Penguin Holiday Ornament
Retail $7.99
Value $22.49
Growth  +181.5%
Annual growth 11.0%

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 $5.96
Annual growth 4.4%