He's claiming U.S. tons, not metric. 400,000 pennies x 3.11 g = 1244 kg = 2742 lbs per bag 2742 lbs x 15 bags = 41,130 lbs = 20.6 U.S. tons (He claims it's 40,890 lbs., so close enough) Since Lincolns are technically brass for scrap purposes, say $2 per lb... $2 x 40,890 lbs. = $81,780 (so this isn't a great deal) Of course, no scrap yard will accept coinage anyway, so.....
No worries, I was just curious and ran through the math exercise myself. I decided not to hit the "buy it now" button