Say we have TheBestCryptoMarketSiteEver.com
I have $1000. I buy BTC with those I buy ETH with the BTC I buy LTC with the ETH I buy USD With the LTC
There's a fee for each of those transaction 0.1% - 0.5% depending.
Would an exchange site's rates ever vary enough to allow for profit from the above gymnastics? Would it be possible to ever end up with more USD than I started with ?