If you want to do scalping you have to watch the prices, buy when it goes down, sell when it goes up.

I have a question, I bought 500 bios worth €400 and sold them at €0.8125, in the end I received €405$ which if I exchanged them would be €394 🤡🤡🤡 So when I bought them at €0.73 it didn't generate anything for me? WHAT THE HELL!!!!