There’s some interesting reviews on youtube. You have to have a prepared bed that’s fairly flat and well organised with protectors for where you have plants growing. You have to put a barrier around its working area. Also you occasionally need to clear the wheels and if it rains, it can stop working in wet mud. So it’s a gimmick really - a lot of work to have a suitable area for it. It will work in the right conditions though. Also the sale price seems to be its usual price.