TCGP-24088 · Pokémon Japan

Holon Research Tower Water Quarter Deck

0 cards, led by Vaporeon ex at $30.74.

Released Sep 30, 2005

Set index · TCGP-24088

The index starts once a few weeks of sales collect.

The 5 most valuable · $6.23 – $30.74

The index

A score that starts at 100 and moves with the set's fair value, compared on the same printings week to week.

One Near Mint copy of every printing at fair value; the chase cards move it most.

The index line fills in as weekly prices collect.

one of every printing · fair value · Nov 11, 2026

Near Mint was $220.60 on Aug 30, 2026 (-8.0%). Totals move when printings are added or first priced; the index above doesn't.

13 of 15 valued in Near Mint

15 singles tracked

What is the typical single?: The median fair value of the set's Near Mint English singles — the price in the middle, so one chase card can't drag it up. Fair value comes from real sales only; the marketplace's Market Price is shown on card pages but never counted.
What does the index line show?: The Set Value Index: one Near Mint copy of every printing at fair value, compared week to week on the same printings, so it moves with the set's value — the chase cards most. It starts at 100; the 90-day figure is that line over the last quarter. Beside it, the typical card (every card counted the same, chases left out) and the chases on their own.
How is popularity scored?: Out of 100, against the rest of the game: how much the set's cards sell for, how many of them sell each week, how many cards it holds and how its index has moved. It ranks sets; it isn't a price.