Strong Buy
Mewtwo from Unbroken Bonds is one of the strongest PSA grading opportunities in the set. The gap between the $3.30 raw price and the $899.99 PSA 10 price gives a 865% Return on Grading. Returns like this tend to attract sellers, so the raw price may not stay this low.
Among the 83 cards in Unbroken Bonds with PSA 10 sale data, Mewtwo ranks 3rd for Return on Grading and 7th by PSA 10 price. Of the 3 Rare cards with PSA 10 sales, it is 2nd for Return on Grading. The median PSA 10 in this set sells for $199.99. 32 of the 83 clear a 100% Return on Grading.