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Questions on Uniswap Fees keep Changing

I am doing a research on Uniswap, but I can't find explanations regarding its Swap UI.

Uniswap Swap

What I want to know is what the 0.275% in the second row means.

I am well aware that Uniswap collects transaction fees for the liquidity pools, but the number I keep mentioning keeps changing and even seem to be positive at times.

Is the 0.275% a liquidity pool fee?

Solution

  • If you hover over the number it says The estimated difference between the USD values of input and output amounts. as you can see in the screenshot below:

    enter image description here

    You can read more about pricing in the uniswap docs.