If you don't want to skate, you can't enter the market at the market price. You can manually enter your ideal price yourself, so that there will be no slip. However, in this case, in the face of rapid market, you will suffer, and you may not enter the market. However, if you are in the usual market, you will generally be fine. After all, the market is fluctuating, and sometimes you can clinch a deal at an ideal price after waiting.