Could be. He made a video which thanks you for your purchase of Volume 1, and then goes on to offer you Volumes 2 and 3.
Well, that thank-you video has been viewed around 438 times, so maybe he has sold 400 copies of Volume 1.
At $47 per copy, plus the chance that customers paid another $47 for the Vol 2 and 3 bundle, then it's possible that Charles has earned revenues of at least $20,000.
Either that or some folks have been repeatedly viewing the "thank you" vid.
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