Sentence Correction (SC) | Re: Prices at the producer level are only 1.3 percent higher now than a

Comparison is made between "Now" and "A year" ago, which seems to be correct according to me. But in OG explanation it is mentioned that comparison is flawed as "Prices" are compared to "A year ago".
According to me if the sentence was "Prices at the producer are only 1.3% higher than a year ago" then it would be incorrect because then comparison is made between "Prices" and "A year ago".

Please
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