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Amazon’s #1 selling creatine has over 60,000 reviews, a 4.6-star rating, and costs as little as $0.17 per serving. On paper, Nutricost Creatine Monohydrate looks like one of the best supplement deals in America. But cheap supplements raise fair questions. Is Nutricost a smart value play — or are there trade-offs most buyers overlook? Here’s…