I found that many people do not know how transaction fees are calculated. Next, I will teach you. The transaction fee is related to your position value. The fee equals the position value ✖ fee rate (0.0015 for market orders, 0.0012 for limit orders). So, assuming you have a principal of 100u and open a position with fifty times leverage, your transaction fee will be 100 × 50 = 5000 (position value) × 0.0005 (or 0.0002) = 2.5 (1). This is just the opening fee; closing will incur another fee, so your total transaction fee should be 5u or 2u for a complete trade. Assuming you open 10 trades in a day, your transaction fees will be between 50 and 20 today, which amounts to 350 or 140u in a week. This exceeds your principal. Therefore, it's important to save on transaction fees when you can and spend wisely.