LEGO Knockturn Alley 4720-1
LEGO Knockturn Alley (4720-1) is worth about $161 on the secondary market today, against a $35 retail price. It has 209 pieces, belongs to the Harry Potter theme and was released in 2003. This set has retired — LEGO no longer produces it, so supply is fixed and prices are set entirely by the resale market.
- Set number
- 4720-1
- Theme
- Harry Potter
- Subtheme
- Chamber of Secrets
- Year
- 2003
- Pieces
- 209
- Minifigures
- 2
- RRP
- $35
- Market value
- $161
- Used value
- $53
- Released
- 2003
- Retirement
- Retired in 2004
Minifigures in LEGO Knockturn Alley
Knockturn Alley value by year
From $96 in 2016 to $150 in 2026 so far: +56%. Its highest year was 2024, at $154.
| Year | Value | Change |
|---|---|---|
| 2026 (so far) | $150 | −0.5% |
| 2025 | $151 | −1.8% |
| 2024 | $154 | +5.6% |
| 2023 | $146 | +5.1% |
| 2022 | $138 | +1.1% |
| 2021 | $137 | +5.9% |
| 2020 | $129 | +15.7% |
| 2019 | $112 | −1.8% |
| 2018 | $114 | +6.9% |
| 2017 | $106 | +10.6% |
| 2016 | $96 | — |
Median of each year's market prices, sealed, in US dollars.
What you are paying for
Its 2 priced minifigures are worth about $22 together, roughly 14% of the set's value — about typical for sets with minifigures (typically 24%).
Frequently asked questions
How much is LEGO Knockturn Alley (4720-1) worth?
LEGO Knockturn Alley is worth approximately $161 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Knockturn Alley retired?
Yes — Knockturn Alley (4720-1) 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 Knockturn Alley gone up in value?
Yes. Knockturn Alley launched at $35 and now trades around $161, an increase of 360.0%. See the price history chart for how it got there.
What is the price per piece for Knockturn Alley?
At its $35 retail price across 209 pieces, Knockturn Alley works out to about $0.167 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Knockturn Alley a good investment?
Knockturn Alley currently trades 360.0% above its $35 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 Knockturn Alley so expensive?
Knockturn Alley was released in 2003 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.