LEGO Castle King Key Chain 850884-1
LEGO Castle King Key Chain (850884-1) is estimated at about $8 sealed as of Sep 2026 (retail $5). Retired 2015 · 2014 Gear. Track its value and price history.
- Set number
- 850884-1
- Theme
- Gear
- Subtheme
- Key Chains/Castle
- Year
- 2014
- Minifigures
- 0
- RRP
- $5
- Market value
- $8 (Estimate, Sep 2026)
- Released
- 2014
- Retirement
- Retired in 2015
Castle King Key Chain value by year
From $4 in 2015 to $8 (Estimate, Sep 2026): +96%. Its highest year was 2025, at $8.
| Year | Value | Change |
|---|---|---|
| Estimate, Sep 2026 | $8 | +4.1% |
| 2026 (so far) | $8 | −2.3% |
| 2025 | $8 | +39.8% |
| 2024 | $6 | −20.3% |
| 2023 | $7 | +17.6% |
| 2022 | $6 | −7.5% |
| 2021 | $7 | +9.5% |
| 2020 | $6 | +5.7% |
| 2019 | $6 | +1.4% |
| 2018 | $6 | +11.1% |
| 2017 | $5 | +8.9% |
| 2016 | $5 | +9.3% |
| 2015 | $4 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO Castle King Key Chain (850884-1) worth?
LEGO Castle King Key Chain is worth approximately $8 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Castle King Key Chain retired?
Yes — Castle King Key Chain (850884-1) 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 Castle King Key Chain gone up in value?
Yes. Castle King Key Chain launched at $5 and now trades around $8, an increase of 69.3%. See the price history chart for how it got there.
Is LEGO Castle King Key Chain a good investment?
Castle King Key Chain currently trades 69.3% above its $5 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 Castle King Key Chain so expensive?
Castle King Key Chain was released in 2014 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.