In 2012, LEGO released 4 Seasonal Christmas sets, all of these sets have been retired. For that year, the total price of all retail sets cost $33, today those sets are valued around $106, a growth of 222%.
Most valuable 2012 LEGO Seasonal Christmas set
3300014 Christmas Set $56.36
Theme / Subtheme Seasonal / Christmas
Year 2012
Pieces 82
Availability Retired
40034 LEGO Christmas Train
Retail $4.99
Value $12.23
Growth  +145.1%
Annual growth 5.2%
Theme / Subtheme Seasonal / Christmas
Year 2012
Pieces 49
Availability Retired
40035 LEGO Christmas Rocking Horse
Retail $4.99
Value $8.00
Growth  +60.3%
Annual growth 2.3%
Theme / Subtheme Seasonal / Christmas
Year 2012
Pieces 3
Availability Retired
850503 LEGO Christmas Holiday Bauble
Retail $7.99
Value $29.62
Growth  +270.7%
Annual growth 10.0%
Theme / Subtheme Seasonal / Christmas
Year 2012
Pieces / Minifigs 109 / 4
Availability Retired
3300014 LEGO Christmas Set
Retail $14.99
Value $56.36
Growth  +276.0%
Annual growth 5.4%