Mewtwo EX #42
SetJapanese Best Of Xy
Year2017
Ungraded
$15.94+$2.76
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
$14.50−$4.28
9 sales · last May 12, 2026
CGC 9
$12.00
1 sales · last Jan 20, 2025
CGC 9.5
$15.60
5 sales · last May 19, 2025
PSA 10
$132.92+$43.77
38 sales · last Jul 1, 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 128 recorded sales for this card across 13 grade tiers, 35 of them in the last 90 days. PSA 10 copies have a 90-day median of $132.92. Ungraded copies currently trade around $15.94. The top grade commands 8.3× the ungraded price — grading meaningfully changes what this card is worth. The highest sale on record is $249.00 (PSA 10, May 6, 2026). 8 listings are live right now with asks from $13.43.
Price history
Grading premium
Median graded price vs. the ungraded copy ($15.94) — a rough read on whether grading pays off.
PSA 6
0.3×
$5.50
PSA 7
1.2×
$19.27
Grade 8
0.6×
$10.31
PSA 8
1.3×
$20.50
CGC 8
0.9×
$14.40
CGC 8.5
0.8×
$12.00
PSA 9
0.9×
$14.50
CGC 9
0.8×
$12.00
CGC 9.5
1.0×
$15.60
PSA 10
8.3×
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 | 1mo ago | $13.43↗ |
| 2017 Near Mint Pokemon Mewtwo EX 042/171 Best of XY Reverse Japanese gui3026 | eBay | 1mo ago |
Recent sales by grade· last 90 days
| Grade | Sold | Median | Range |
|---|---|---|---|
| Ungraded | 14 | $15.94 | $5.36 – $125.00 |
| PSA 7 | 1 | $29.49 | $29.49 |
| PSA 9 | 1 | $35.10 | $35.10 |
| PSA 10 | 17 | $132.92 | $121.14 – $249.00 |
| CGC 10 | 1 | $159.99 | $159.99 |
| CGC Pristine 10 | 1 | $149.99 |
Recent sales
| Date | Grade | Title | Sold on | Price |
|---|---|---|---|---|
| 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 | Pokemon Card Mewtwo EX 042/171 Best Of XY Rare Holo Japanese NM↗ | eBay | $18.77 |
| 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)
