Sentence:  Thus the red damask curtains which now shut out the fog-laden, drizzling atmosphere of the Marylebone Road, had cost a mere song, and yet they might have been warranted to last another thirty years. A great <WSD>bargain</WSD> also had been the excellent Axminster carpet which covered the floor;nb.... 
Meaning of the word marked with <WSD> tags:  A gainful transaction; an advantageous purchase.