This idea is more old than you.
Remember that to make this you need to move fiat, and this means a few days to finish the whole process, so there's the risk of the price falling even more.
![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
It's almost entirely pointless doing that unless you're constantly moving large sums of money since there are already so many other people doing it that it's only barely profitable.
There's also a significant delay when depositing, and the windows for potential arbitrage can be only seconds-long. You'd probably be better off doing some kind of triangular arbitrage with a bot between pairs existing on the same exchange, but even that's probably already too saturated to the point that it feels like you're fighting against the exchange itself.