In 2023, LEGO released 2 Seasonal Birthday sets. For that year, the total price of all retail sets cost $15, today those sets are valued around $41, a growth of 172%.
Most valuable 2023 LEGO Seasonal Birthday set
40641 Birthday Cake $24.29
Most owned 2023 Seasonal Birthday set
40584 Birthday Diorama
2 sets

40584 Birthday Diorama

Theme / Subtheme Seasonal / Birthday
Year 2023
Pieces / Minifigs 157 / 2
40584 LEGO Birthday Diorama
promotional
Value $16.42

40641 Birthday Cake

Theme / Subtheme Seasonal / Birthday
Year 2023
Pieces / Minifigs 211 / 2
Availability Retired
40641 LEGO Birthday Cake
Retail $14.99
Value $24.29
Growth  +62.0%