Something that I didn't expect is that is not that easy as "buy low" and "sell high". I had to cap the buying price for the bot to make money at all, else the "bought at" will get so high, that you won't have a chance to buy much.

    let bougthAt = 0;

    let fn = { click: () => {} };
    let buy = document.querySelector("#buy");
    let sell = document.querySelector("#sell");

    (function work() {

      let founds = +document.querySelector("#funds-fiat").innerText;
      let coins = +document.querySelector("#funds-coin").innerText;
      let price = +document.querySelector("#price").innerText;

      if (founds > price && price < 5000) {
        fn = buy;
        bougthAt = price;
        console.log("bougthAt", bougthAt);
      } else if (price > bougthAt && coins > 0) {
        fn = sell;
        console.log("sellingAt", price);
      }
      fn.click();
      requestAnimationFrame(work);
    })();