Hello @favado , welcome to the forum. You may want to read along with use here: Another Strange DESS behaviour - #13 by UpCycleElectric
I tend to agree with that statement. I seems to me that most recent DESS development has been focused on solar systems and self consumption in Green mode with less attention to Trade mode. I am testing with Node-RED flows to make Trade mode be more opportunistic in its buying decisions which makes it behave more in line with how I’d expect it to do. I too tend to believe the best economic performance (low cost, return on investment) is to be had with a well behaved Trade algorithm even with solar production added on top of that.