Sentence:  [T]he plaintiff re-sold the said one hundred and sixty-five bags of Russian and German wool so remaining unaccepted by the defendants and <WSD>unpaid</WSD> for by them, by public sale, at and for a much less sum, to wit, the sum of 2000"l." less than the sum so agreed to be paid by the defendants for the same; ... 
Meaning of the word marked with <WSD> tags:  Not paid for.