> very laborious business model. > buys them up < 10% of the retail price then puts them up at 90% retail price In other words, the labor he puts in is worth

> very laborious business model. > buys them up < 10% of the retail price then puts them up at 90% retail price In other words, the labor he puts in is worth the 80% of retail price. Or seen differently, he's a business that uses labor to turn a worthless pile of mixed products of questionable usefulness into sellable product.