# High Pressure System #85/97 — Dragon

## Summary

High Pressure System is a Stadium that eased retreat costs for Fire and Water Pokémon, a modest niche effect that made it a deck-specific tech piece rather than a staple. As an Uncommon in an EX-era set, it was a mid-tier pull, so demand comes from completionists and Ken Ikuji's following. A $0.60 modelled guide, up 3% over 30 days on 1 copy traded, says bulk, with 273 days of inventory on the board, and the economics stop there: a CGC 10 brings $9.50, 16 times raw, but PSA does not split this card’s population by finish, so no gem rate can be read for it.

## Identity

| Field | Value |
| --- | --- |
| Set | Dragon |
| Number | 85/97 |
| Rarity | Uncommon |
| Era | EX |
| Illustrator | Ken Ikuji |
| Release date | 2003-11-24 |
| Image | Unavailable |

## Card details

| Field | Value |
| --- | --- |
| Card type | TRAINER |
| Subtype | Stadium |
| Legal | Standard no · Expanded no |
| Finishes | Normal, Reverse Holo |
| Languages | EN |

## Current stats

- Headline price: **$0.60** (ITEM_MEDIAN; modelled guide price) — as of 2026-11-07
- Headline basis: MODELLED_GUIDE — The venue’s published daily market guide, which the venue itself declares MODELLED. Nothing is confirmed to have traded at it, no copy is listed at it, and it is not our estimate — it is theirs.
- 24h change: n/a · 7d change: n/a — as of 2026-11-07
- Floor delivered ask: $2.07 — as of 2026-11-07T23:47:55.260Z
- Quant score: 53/100, regime ILLIQUID_UNKNOWN — as of 2026-11-07T23:47:55.260Z — 4 of 11 inputs · 38% weight · -31% confidence

## Provenance

- Catalog — observed 2003-11-24T00:00:00Z, confidence 98%
- Live ask — observed 2026-10-16T20:26:42.591Z, confidence 90%
- Guide price (modelled) — observed 2026-11-07T00:00:00.000Z, confidence 90%
- Price statistic — observed 2026-10-16T20:26:40.686Z, confidence 90%
- Confirmed sale — observed 2026-10-10T18:50:30.150Z, confidence 85%
- Inventory count — observed 2026-10-16T20:26:40.684Z, confidence 70%

## Links

- [View on Cardboard Alpha](https://cardboardalpha.com/pokemon/dragon/high-pressure-system-85)
- [JSON snapshot](https://cardboardalpha.com/api/terminal/raw~tcgdex%3Aex3-85%3AEN%3ANORMAL~NM)