Almost all brokers have minimum deposit requirements and it is not understandable why you want to scalp 3 bucks less than 1$ balance. You can deposit 10$ and after successful trading positions you can withdraw your balance but don't touch the amount which you can't afford to lose on scalping.
I think you misunderstood me. My budget is 100 dollar but I would like to receive 1 dollar for every 1 dollar move of BTC/USD. I will close trade if profit is >3 dollar, so the fee must be very small