I wont be able to test it but this seems to be something like arbitrage? Correct me if I'm wrong
Yes and no, I like to think of it as a regular bitcoin exchange, high frequency trading, and local bitcoin exchange (with cash) as you can buy/sell bitcoins manually, automatically (HFT) and buy/sell locally with cash (there will be features similar to local bitcoins), I'm bringing all these under one service with added value, features, security, much lower fees (plus no deposit/withdraw fees) and much more.