Mewtwo EX #42
SetJapanese Best Of Xy
Year2017
Ungraded
$18.77+$4.78
44 sales · last Jul 5, 2026
PSA 6
$5.50
1 sales · last Oct 2, 2023
PSA 7
$19.27
2 sales · last May 18, 2026
Grade 8
$10.31
2 sales · last Jan 22, 2026
PSA 8
$20.50
1 sales · last Apr 5, 2023
CGC 8
$14.40
1 sales · last Apr 6, 2026
CGC 8.5
$12.00
3 sales · last Jun 30, 2025
PSA 9
$35.10+$19.05
10 sales · last May 19, 2026
CGC 9
$12.00
1 sales · last Jan 20, 2025
CGC 9.5
$15.60
5 sales · last May 19, 2025
PSA 10
$200.00+$20.00
39 sales · last Jul 13, 2026
CGC 10
$36.00+$12.00
11 sales · last May 26, 2026
CGC Pristine 10
$37.20+$6.00
10 sales · last May 26, 2026
Mewtwo EX #42 price guide
Mewtwo EX #42 is a collectible Pokémon card from the Japanese Best Of Xy expansion (2017). Setlot tracks 130 recorded sales for this card across 13 grade tiers, 7 of them in the last 90 days. PSA 10 copies have a 90-day median of $200.00. Ungraded copies currently trade around $18.77. The top grade commands 11× the ungraded price — grading meaningfully changes what this card is worth. The highest sale on record is $275.00 (PSA 10, Jul 13, 2026). 8 listings are live right now with asks from $13.43.
Price history
Grading premium
Median graded price vs. the ungraded copy ($18.77) — a rough read on whether grading pays off.
PSA 6
0.3×
$5.50
PSA 7
1.0×
$19.27
Grade 8
0.5×
$10.31
PSA 8
1.1×
$20.50
CGC 8
0.8×
$14.40
CGC 8.5
0.6×
$12.00
PSA 9
1.9×
$35.10
CGC 9
0.6×
$12.00
CGC 9.5
0.8×
$15.60
PSA 10
11×
Live listings
Search on eBay ↗Lowest asks per grade. Older listings may have ended — “seen” is when we last confirmed each one.
| Grade | Listing | Marketplace | Seen | Price |
|---|---|---|---|---|
| Ungraded 5 tracked | 2017 Pokemon Japanese Best of XY Mewtwo Ex 42/171 w.i.n.t.e.r.s | eBay | 3mo ago | $13.43↗ |
| 2017 Near Mint Pokemon Mewtwo EX 042/171 Best of XY Reverse Japanese gui3026 | eBay | 3mo ago |
Recent sales by grade· last 90 days
| Grade | Sold | Median | Range |
|---|---|---|---|
| Ungraded | 5 | $18.77 | $11.25 – $67.00 |
| PSA 10 | 2 | $230.42 | $185.84 – $275.00 |
Recent sales
| Date | Grade | Title | Sold on | Price |
|---|---|---|---|---|
| Jul 13, 2026 | PSA 10 | Pokémon TCG Mewtwo EX 042/171 Best of XY Japanese Edition PSA 10 Gem Mint Rare↗ | eBay | $275.00 |
| Jul 5, 2026 | Ungraded | 2017 Pokemon Mewtwo #42 Japanese EX Best of XY↗ | eBay | $67.00 |
| Jul 1, 2026 | PSA 10 | Mewtwo EX – SM: The Best of XY – 2017 042/171 – PSA 10 – JPN↗ | eBay | $185.84 |
| Jun 10, 2026 | Ungraded | Mewtwo EX 042/171 The Best of XY Japanese Pokemon [NM] (2)↗ | eBay |
![Lugia [Reverse Holo] #102](https://images.setlot.com/pokemon/pc-pokemon-japanese-best-of-xy-lugia-reverse-holo-102.jpg?v=2)
