LEGO Birthday Diorama 40584 40584-1
LEGO Birthday Diorama 40584 (40584-1) is worth about $21 sealed (retail $13). Retired 2023 · 157 pieces · 2023 Other. Track its value and price history.
Say “Happy Birthday” in style!
- Set number
- 40584-1
- Theme
- Other
- Subtheme
- Birthday
- Year
- 2023
- Pieces
- 157
- Minifigures
- 2
- RRP
- $13
- Market value
- $21
- Used value
- $7
- Released
- 2023
- Retirement
- Retired in 2023
Minifigures in LEGO Birthday Diorama 40584
LEGO Birthday Diorama 40584 at LEGO: release to today
- Nov 8, 2026: Out of stock at LEGO Poland
- Nov 8, 2026: Out of stock at LEGO Sweden
- Nov 7, 2026: Out of stock at LEGO Ireland
- Nov 6, 2026: Out of stock at LEGO Spain
- Nov 6, 2026: Out of stock at LEGO France
- Nov 6, 2026: Out of stock at LEGO UK
- Nov 6, 2026: Out of stock at LEGO Netherlands
- Nov 5, 2026: Out of stock at LEGO Germany
- 2023: released
What LEGO.com showed, checked daily in the US and eight European stores.
Birthday Diorama 40584 value by year
From $15 in 2024 to $21 today: +41%. Its highest year was 2026, at $16.
| Year | Value | Change |
|---|---|---|
| Today | $21 | +37.3% |
| 2026 (so far) | $16 | +3.5% |
| 2025 | $16 | +2.6% |
| 2024 | $15 | — |
Median of each year's market prices, sealed, in US dollars.
What you are paying for
Its 2 priced minifigures are worth about $5 together, roughly 24% of the set's value — about typical for sets with minifigures (typically 24%).
Frequently asked questions
How much is LEGO Birthday Diorama 40584 (40584-1) worth?
LEGO Birthday Diorama 40584 is worth approximately $21 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Birthday Diorama 40584 retired?
Yes — Birthday Diorama 40584 (40584-1) has been retired by LEGO and is no longer in production. Retired sets have fixed supply, which is why their prices are driven purely by the resale market.
Has LEGO Birthday Diorama 40584 gone up in value?
Yes. Birthday Diorama 40584 launched at $13 and now trades around $21, an increase of 65.3%. See the price history chart for how it got there.
What is the price per piece for Birthday Diorama 40584?
At its $13 retail price across 157 pieces, Birthday Diorama 40584 works out to about $0.083 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Birthday Diorama 40584 a good investment?
Birthday Diorama 40584 currently trades 65.3% above its $13 retail price, and it is retired, so no new supply is entering the market. Past performance is not a prediction — condition, packaging and how long you hold all affect what a set actually sells for. BrickStats reports the numbers rather than giving investment advice.
Why is LEGO Birthday Diorama 40584 so expensive?
Birthday Diorama 40584 was released in 2023 and has since retired. Once LEGO stops producing a set, the only supply is what is already in circulation, so sealed copies in good condition compete for a shrinking pool of stock. That scarcity, not the parts, is what moves the price.