Right now if I spent $5,000 in usd I could buy 4,906 in DAI. That is a stable coin that should be 1:1. On the app, no commission would be added for this transaction.
Obviously this is not profitable but what if the spread were reversed? $5,000 would get me 5,094 DAI. Then I wait for it to go back the other way (the rate it is today) and can sell it back for $5,189
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