Got to understand that some exchanges list a price they are offering to you, while others are listing offers from other traders. In the end, it generally works out to be the same price, although there are some ways some traders try and make profit from the differences across exchanges. Someone mentioned scalping, I believe arbitrage is more accurate to describe this action. Popular especially when price discrepancies happen, as has happened in past when demand spiked in S Korea, parts of Africa, Iran, and in India when it even dipped after a govt (temporary) ban.

In reality, Bitcoin's volatility makes it difficult to do this, price can move very quickly so unless you're on high liquidity exchanges, you might just as easily get stuck with losses that quickly add up. Manually managing accounts across different exchanges also not


That's exactly what he said.