I've been watching inter-exchange arbitrage for a while and wondering whether it really works in practice or only in theory. Maybe some of you have already tried it?

The idea is simple: the same coin has different prices on different platforms. Buy cheaper here, sell higher there, and profit from the difference. It sounds logical, but how it actually works in practice is the question.

Prices differ because each exchange has its own supply and demand, plus information updates with delays. Different countries have different laws and currencies, which also affect prices. Inter-exchange arbitrage seems like the most obvious option—buy crypto on one platform, transfer it to another, and sell. But there are other approaches too.

You can catch price differences between trading pairs within the same exchange. For example, if ETH/USDT is cheaper than ETH/BTC when converted, you can swap back and forth for profit. Or triangular arbitrage—exchange USDT for BTC, then BTC for ETH, and finally back to USDT if there's a price gap somewhere. There's also regional P2P options—buy on a major platform in dollars, then sell in local currency with a markup.

To get started, you need accounts on multiple platforms. Depositing stablecoins like USDT or USDC is the easiest. Then, monitor prices using specialized services or bots. But here, the pitfalls begin.

Fees are the first thing that kills profits. Withdrawals, deposits, conversions—all charge a percentage. If inter-exchange arbitrage gives you $50–$100 profit, but fees eat up $30–$40, what's the point? Plus, transfer speeds matter. While crypto is moving from one exchange to another, prices can drop, and all the margin can evaporate. It's better to use fast networks like TRC-20 or BSC, but delays still exist.

Example: Bitcoin (BTC) is currently around $68,000. Suppose on one platform it's $68,100, and on another $68,000. The difference is $100. Sounds good, but if withdrawal fee is 0.5%, deposit fee 0.3%, and exchange fee another 0.1%, you're already at a loss. Some exchanges also impose withdrawal limits or start suspecting fraud due to frequent transfers.

I understand the logic of inter-exchange arbitrage, but I’m not sure if it’s worth jumping into. Maybe it was profitable five years ago when the market was less efficient? Now, big players and bots catch these differences in milliseconds. What do you think— is this a real way to make money or just a waste of time?