Is it worth grading Mewtwo #56 from Expedition Base Set?

It depends on condition and market pricing. Current PSA 10 gem rate is 23.0% (based on 617 graded copies). PSA 10 sales average $1471.93 versus a raw market of $66.15. Use the calculator on this page to compute exact EV for your card's condition.

What is the PSA 10 gem rate for Mewtwo #56?

23.0% (based on 617 graded copies)

What does PSA grading cost?

PSA service levels range from $59.99 per card (Standard, 90-100 business days) to $9,999+ (Premium 10, for cards worth $250,001+). If a graded card is worth more than its tier's Max Insured Value, PSA upgrades it to the tier that covers it and bills the difference.

Should You Grade Mewtwo #56 (Expedition Base Set)? PSA Grading EV

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Should You Grade Mewtwo?

Expedition Base Set · #56 · Rare

Default-tier verdict

Grade It+$310 (+198% ROI)

Based on raw market $66.15, PSA 10 $1471.93, gem rate 23.0% (617 graded). Adjust inputs below for your card's exact condition.

Mewtwo

Expedition Base Set · #56 · Rare

Market: $66.15

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PSA Pop · 617 graded

PSA 10

23.0%

PSA 9

37.3%

PSA 8

20.4%

PSA 7

7.6%

Your Costs

Raw card cost

Grading tier

Shipping estimate + Other fees

Expected Sale Prices

PSA 10

PSA 9

PSA 8

PSA 7

Card Condition

Centering

Edges & Corners

Surface

Fine-tune your gem-rate odds based on centering, edges, and surface condition.

Expected Value

⚠If graded PSA 10, PSA will upcharge to Priority ($80) — your PSA 10 value of $1472 exceeds this tier's $1,000 cap. No upcharge on PSA 9.

PSA 10: 23.0% × $1471.93+$338.76

PSA 9: 37.3% × $220.32+$82.13

PSA 8: 20.4% × $140.00+$28.59

PSA 7: 7.6% × $112.00+$8.53

Below 7: 11.7% × raw+$7.72

Raw card cost-$66.15

Standard grading (weighted avg)-$64.59

Shipping + Other Fees-$10.00

EV+$324.99(+231% ROI)

Grade It

231% ROI — strong margin absorbs selling fees and price swings.

Want to track this card's price and grading data?

Grade It

231% ROI — strong margin absorbs selling fees and price swings.

About this calculator

This page computes the expected value (EV) of submitting Mewtwo #56 to PSA for grading. EV factors in real PSA population data (gem rates), live market prices for raw and graded copies, and PSA's tiered fee structure including upcharges when a card's graded value exceeds the tier's Max Insured Value. Adjust the inputs to match your card's exact condition for a personalized recommendation.

PSA population summary

Grade	Population	Rate
PSA 10	142	23.0%
PSA 9	230	37.3%
PSA 8	126	20.4%
PSA 7	47	7.6%

Should You Grade Mewtwo #56 from Expedition Base Set?

Mewtwo

Your Costs

Expected Sale Prices

Card Condition

Expected Value

About this calculator

PSA population summary

Mewtwo

Your Costs

Expected Sale Prices

Card Condition

Expected Value