The Junk Junction was founded during the Great Depression by two enterprising brothers, Larry and Moe Barrelscrape. What they lack in the profit margin department, they make up for through volume. Selling donated goods at rock-bottom prices doesn't sound like much of a business model, but the Barrelscrape brothers compensated by practically blanketing the entire country in Junk Junction stores. You can't throw a rock, crack or otherwise, without hitting one.
The beauty of Junk Junction stock is that the company's fortunes are more or less acyclical. In good times, better-off folks are practically giddy in giving their things away to local JJ outlets. In lean times, demand for low-cost, questionable-quality goods practically explodes.