Image © The Pokémon Company, shown for identification.
Mewtwo GX
Shining Legends · #78/73
Mewtwo GX (78/73), the Secret Rare from Shining Legends, has an estimated ungraded market price of about $810, typically in the $710–$910 range.
As of September 6, 2026 · tracked daily by Riffle · estimates, not financial advice · how these numbers work
The modeled fair value of this card, with a confidence grade: what it should trade at, not just what it lists at. Part of Riffle premium, alongside price history and the full graded ladder.
Last 30 days of clean eBay listings for Mewtwo GX · as of Sep 3
The line tracks standing active listings (note the zoomed scale). Bars below split each day’s turnover around zero: new listings arriving above, listings leaving below, sold vs expired. Empty days had no capture. Demand pressure is estimated units sold per day as a share of active listings. Estimated eBay units, counts only, tracked daily by Riffle. The exact price history behind these is part of Riffle premium.
30 of 279 clean matches · lowest landed price first · live asking prices, not sold prices
- $250.00free ship
- $312.50free ship
- $330.00free ship
- $349.99free ship
- $350.00free ship
- $350.00free ship
- $399.99free ship
- $415.40free ship
- $420.69free ship
- $420.00+ $7.01 ship
- $449.99free ship
- $600.00+ $20.00 ship
- $875.00+ $20.00 ship
- $1,000.00+ $5.99 ship
- $1,199.99free ship
- $1,199.00+ $5.99 ship
- $1,250.00free ship
- $1,311.97free ship
- $1,389.40+ $28.97 ship
- $1,589.36+ $9.38 ship
- $1,675.00free ship
- $1,695.00free ship
- $1,700.00free ship
- $1,700.00free ship
- $1,750.00free ship
- $1,769.00free ship
- $1,799.99+ $5.99 ship
- $2,000.00+ $5.99 ship
- $2,444.90+ $365.00 ship
- $4,750.00+ $25.00 ship
Clean matches only: lots, bundles, and likely wrong-item listings are excluded. Auction prices are the current bid. Riffle may earn a commission from eBay on qualifying purchases made through these links, at no cost to you.
About Mewtwo GX
Mewtwo GX is a Secret Rare (78/73) from the Pokémon Shining Legends set, released October 6, 2017. Ungraded copies currently trade at an estimated market price of $710–$910. The artwork is by Mitsuhiro Arita. Riffle tracks its market price daily; graded (PSA) comps and full price history are available with Riffle.
Other versions of Mewtwo GX
Mewtwo GX appears on 5 different cards across the sets Riffle tracks, at very different values. This page covers #78/73 from Shining Legends; the collector number printed at the bottom of the card tells them apart.
FAQ
How much is Mewtwo GX (78/73) worth?
Mewtwo GX (78/73), the Secret Rare from Shining Legends, has an estimated ungraded market price of about $810, typically in the $710–$910 range. Note: 4 other cards named Mewtwo GX exist across the sets Riffle tracks, at very different values; check the collector number.
Which Mewtwo GX card is this, and how do I tell the versions apart?
This page covers Mewtwo GX (78/73), the Secret Rare (about $710–$910) from Shining Legends.
The other versions: #76/73 from Shining Legends (Secret Rare, about $80–$110); #72/73 from Shining Legends (Ultra Rare, about $28–$37); #39/73 from Shining Legends (Ultra Rare, about $13–$18); #31/68 from Hidden Fates (Ultra Rare, about $8–$11).
The collector number printed at the bottom of the card is the reliable way to tell them apart.
Should I grade Mewtwo GX (78/73)?
Ahead after fees: with a 17% PSA 10 gem rate and current graded prices, grading a near-mint Mewtwo GX (78/73) is estimated to net about $1665 more than selling it raw (est.).
Assumes ~$25/card bulk-rate grading (standard service costs more); ignores turnaround time, sub-9 grades, and shipping. A screen, not a promise.
Is Mewtwo GX (78/73) rare?
Mewtwo GX (78/73) is a Secret Rare. PSA has graded 16,527 copies to date, so graded supply is measurable and growing.
How rare is a PSA 10 Mewtwo GX (78/73)?
Of the 16,527 copies PSA has graded, 17% earned a PSA 10. That's a low gem rate, so flawless copies are genuinely hard to come by. Grade-by-grade population and pop-over-time appear with Riffle premium.
More from Shining Legends
Should I grade Mewtwo GX?
Ahead after fees: grading nets ≈ +$1665 vs selling raw (est.)
Expected grading return from this card’s own PSA grade mix (17% gem rate; grades under 8 valued at the PSA 8 price) and current graded market prices, minus a ~$25/card bulk-rate grading fee, compared against selling ungraded at market price. Treat this edge as a ceiling: PSA pop rates reflect copies collectors chose to submit, and a random raw copy of an expensive card usually grades worse. Standard grading service costs more; centering risk, turnaround time, and shipping aren’t included. The exact PSA 8/9/10 prices behind this are part of Riffle premium. Not financial advice.
PSA population & gem rate
From the PSA population census, captured monthly by Riffle. A 17% gem rate is on the hard side; PSA 10 copies of this card are scarcer than the typical modern chase card. Grade-by-grade population and pop-over-time appear with Riffle premium.
- $710–$910 is the middle 80% of clean market activity, not the cheapest listing and not the most hopeful one.
- The band spans about ±12% around its midpoint: a tight, well-agreed price.
- 329 clean listings back today’s basis, with storefront and lot noise excluded.
- 19 listings ended in the last 7 days: the flow the estimate is measured against.
- Sampled daily since July 20, 2026, current as of September 6, 2026.
When the data thins, the band widens and says so, it never fakes precision. Exact source prices are part of Riffle premium; the band is Riffle’s own figure to publish. How these numbers work →