A step-by-step guide to profiting off a 3-cent hike on US postage stamps – Quartz.
Our plan is to buy 10 million stamps at $0.46 each and sell them at $0.48. The margins, of course, are small. If we buy 10 million stamps, spending $4.6 million, we’ll earn $200,000—a 4.3% profit.
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