Is this a question about the product or what do you want to tell us? The price fluctuations are easily explained: the manufacturer is releasing a new EcoFlow River 2 series. The prices of the 1st series were lowered, the units became scarce, and the prices are going up again. I see that the new series is not available until January. I myself have several EcoFlow units in use and cannot say anything negative about them, except perhaps that I would like to have all the controls on one side.