PSA update (Sept 19): Standard is open at $59.99 (estimated 90–100 business days). Value tiers remain paused and can be selected on card pages as hold scenarios using their previous fees. PSA Priority is $79.99 (70–80 business days). Historical article examples retain their dated fees. Pricing, limits and details
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Home/Sets/Pokemon Steam Siege/Best Cards

Best Pokemon Steam Siege Cards to Grade

Top 12 Pokemon Steam Siege Cards by PSA 10 Payoff, All with Positive Expected Value

Looking for the best Pokemon Steam Siege cards to grade? These are the 12 picks with the highest payoff if the card comes back a PSA 10. Every card here also has positive expected value once every grade outcome is weighted by its real gem rate, so the ranking never recommends a card the math says to skip.

How these numbers work. Expected value weights every PSA grade by how often this card actually earns it, then subtracts the raw price and the $79.99 grading fee. If PSA 10 is the single best-case outcome: PSA 10 price minus raw price minus the grading fee. Selling fees, shipping, and insurance are not deducted — set your own selling fee on any card page.

Prices updated weekly · Last updated October 1, 2026

1
Gardevoir EX #116

Gardevoir EX #116

Positive EV $329.79
Raw $92.63 → PSA 10 $1,850.00Gem Rate 20.9%ROI 972%

$1,677.38

if PSA 10

2
Volcanion EX #115

Volcanion EX #115

Positive EV $178.40
Raw $24.28 → PSA 10 $848.43Gem Rate 27.1%ROI 714%

$744.16

if PSA 10

3
Steelix EX #108

Steelix EX #108

Positive EV $88.58
Raw $14.46 → PSA 10 $675.48Gem Rate 21.9%ROI 615%

$581.03

if PSA 10

4
Shiftry #11

Shiftry #11

Positive EV $39.08
Raw $1.77 → PSA 10 $491.69Gem Rate 21.4%ROI 501%

$409.93

if PSA 10

5
M Gardevoir EX #112

M Gardevoir EX #112

Positive EV $104.57
Raw $36.03 → PSA 10 $524.83Gem Rate 32.9%ROI 352%

$408.81

if PSA 10

6
Gardevoir EX #111

Gardevoir EX #111

Positive EV $63.84
Raw $20.14 → PSA 10 $482.78Gem Rate 27.8%ROI 382%

$382.65

if PSA 10

7
Volcanion EX #107

Volcanion EX #107

Positive EV $60.41
Raw $9.79 → PSA 10 $439.05Gem Rate 29.5%ROI 389%

$349.27

if PSA 10

8
M Steelix EX #109

M Steelix EX #109

Positive EV $33.69
Raw $18.99 → PSA 10 $334.89Gem Rate 30.6%ROI 238%

$235.91

if PSA 10

9
Magearna EX #110

Magearna EX #110

Positive EV $11.96
Raw $8.86 → PSA 10 $273.00Gem Rate 31%ROI 207%

$184.15

if PSA 10

10
Pyroar BREAK #24

Pyroar BREAK #24

Positive EV $20.12
Raw $3.75 → PSA 10 $210.00Gem Rate 46.3%ROI 151%

$126.26

if PSA 10

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11
Yanmega BREAK #8

Yanmega BREAK #8

Positive EV $3.98
Raw $3.01 → PSA 10 $159.02Gem Rate 51.1%ROI 92%

$76.02

if PSA 10

12
Shiftry [Reverse Holo] #11

Shiftry [Reverse Holo] #11

Positive EV $16.60
Raw $1.86 → PSA 10 $131.00Gem Rate 7%ROI 60%

$49.15

if PSA 10

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© 2026 Should You Grade? Data from PriceCharting & GemRate.
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