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The maths doesn't work on Bulbasaur from 151 right now. Raw copies trade around $0.26 while PSA 10s sell for about $24.27, a -73% Return on Grading. Worth rechecking if the raw price drops or PSA 10 demand spikes.
Among the 78 cards in 151 with PSA 10 sale data, Bulbasaur ranks 72nd for Return on Grading and 74th by PSA 10 price. Of the 7 Common cards with PSA 10 sales, it is 7th for Return on Grading. The median PSA 10 in this set sells for $131.00. 19 of the 78 clear a 100% Return on Grading.
