In this case, the math is not very good: the author writes that he bought for 220$ 500 coins at a price of 0.5. But 500x0.5=250$😂 Where is the other 30$? The strategy works in ,,-‘’🔥👍🏻

What is unclear? I bought in the pre-market for 220 $ - 500 coins, at a price of 0.5, sold 200 at a price of 1.4, waiting for the price to drop to 1-1.1 to buy another 280 that I sold, receiving+