A 2% arbitrage opportunity.
At the San Francisco Science Museum, next to the commemorative coin, insert 1 dollar to get back 1 dollar + 2 cents in coins. Admission is 40 dollars, free for locals.
At the San Francisco Science Museum, next to the commemorative coin, insert 1 dollar to get back 1 dollar + 2 cents in coins. Admission is 40 dollars, free for locals.