LEGO Supplementary Discs 8508-1
LEGO Supplementary Discs (8508-1) is estimated at about $19 sealed as of Sep 2026 (retail $2). Retired · 5 pieces · 1999 Technic.
- Set number
- 8508-1
- Theme
- Technic
- Subtheme
- Slizer
- Year
- 1999
- Pieces
- 5
- Minifigures
- 0
- RRP
- $2
- Market value
- $19 (Estimate, Sep 2026)
- Used value
- $2
- Released
- 1999
- Retirement
- Retired
Supplementary Discs value by year
From $5 in 2016 to $19 (Estimate, Sep 2026): +308%. Its highest year was 2021, at $14.
| Year | Value | Change |
|---|---|---|
| Estimate, Sep 2026 | $19 | +83.7% |
| 2026 (so far) | $13 | +22.8% |
| 2025 | $10 | −11.3% |
| 2024 | $12 | −9.2% |
| 2023 | $13 | +4.8% |
| 2022 | $12 | −11.5% |
| 2021 | $14 | +126.3% |
| 2020 | $6 | +6.5% |
| 2019 | $6 | +10.6% |
| 2018 | $5 | +33.6% |
| 2017 | $4 | −16.6% |
| 2016 | $5 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO Supplementary Discs (8508-1) worth?
LEGO Supplementary Discs is worth approximately $19 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Supplementary Discs retired?
Yes — Supplementary Discs (8508-1) 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 Supplementary Discs gone up in value?
Yes. Supplementary Discs launched at $2 and now trades around $19, an increase of 846.0%. See the price history chart for how it got there.
What is the price per piece for Supplementary Discs?
At its $2 retail price across 5 pieces, Supplementary Discs works out to about $0.400 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Supplementary Discs a good investment?
Supplementary Discs currently trades 846.0% above its $2 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 Supplementary Discs so expensive?
Supplementary Discs was released in 1999 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.