Many traders make a fatal mistake when setting reverse orders — they set the range too tightly. What’s the result? Not long after buying in, a slight price fluctuation causes the order to become a decoration, unable to sell.

Take RLS as an example, the current price is 0.01288042. What do some people do? They set the buy price at 0.01288043 and the sell price at 0.01288041. This is no different from trying to catch a trap themselves. Either they can’t buy in, or they can’t sell out, getting stuck on both ends.

**The correct approach should be:**

For buying, just fill in 0.0129 or 0.013; for selling, fill in 0.0128, 0.012, or even 0.01 — all are perfectly fine. What’s the benefit of doing this? The buy will execute at the current price, and the sell will also execute at the current price. Slight price fluctuations? No problem, the order can still go through.

Let’s do some quick calculations to understand. Under stable market conditions, this method results in a slippage rate of about 0.02%. In other words, with a principal of 1000U, the loss is only about 0.2U. When sudden volatility occurs, and the market shifts rapidly, a 1000U order might incur a slippage of 1 to 2U.

Compare this to another scenario: setting the range too tight causes the order to be unable to sell, so you wait around. After waiting for dozens of minutes without a sale, you might end up getting stuck with losses of dozens or even hundreds of U. As a result, half a month or even an entire month’s profit can be wiped out.

Therefore, the key is to leave enough room for the order to move, giving it a chance to execute with the market rhythm, rather than sticking too close to the price and being passive everywhere. This is the right way to achieve long-term stable arbitrage.