MG-23937 · Pokémon Japan

Mewtwo vs Genesect Deck Kit (Mewtwo)

0 cards, led by Gothita at $6.09.

Released Jul 13, 2013

Set index · MG-23937

The index starts once a few weeks of sales collect.

The 5 most valuable · $1.66 – $6.09

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 13, 2026

Near Mint was $36.75 on Aug 30, 2026 (-18.9%). Totals move when printings are added or first priced; the index above doesn't.

15 of 16 valued in Near Mint

16 singles tracked

What is the set value?: What it costs to own one Near Mint copy of every printing in the set, at fair value. 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 change beside the set value is that line over 30 days, or over 7 for a set too new for a month. Beside it, the set without the chases (every card counted the same) 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.