I found this audio learning course after buying a box of novels at a garage sale. All the CD's are present. To be honest I don't know if this was ever used. The inside of the packaging is clean. There seem to be no smudges, marks, scratches, or fingerprints on any of the CD's. The booklet is also clean, no tears, scratches, or bends. I think this person bought the set and then put them in their garage. 

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