Xy - Breakthrough

The short, expensive tail of the set.

You can own 160 of the 170 priced cards in Xy - Breakthrough for about $388. The median card is $0.38. The remaining $1,052 sits in just 10 chase cards, and one of them (Mewtwo EX (164 Secret Full Art), $210) is 15% of the entire set on its own. A full set is not one long climb. It is a cheap, fast 27% and then a very short, very expensive tail.

CHEAPER THAN THE BOX

The single most valuable card in this set costs $3,033.59 less than one sealed booster box of it. Box price TCGplayer, as of 2026-10-19.

Two recorded prices. The odds of pulling the card are the rip simulation below, not this line.

Computed from this set's own recorded value series; windows are stated and nothing is modeled. Each return is the first recorded value inside its window against the last. We withhold it when the number of cards in the basket changed inside the window, when a single step moved more than 20%, or when the series cannot cover the window.

Every price is the tracked TCGplayer figure from our nightly sealed sync. Cost per pack is shown only where the pack count is recorded on a single-unit product; lots (cases, multi-sets) are listed but never enter per-pack math. No pack counts are assumed.