A desk/stand fan helps. We keep our thermostat at 77 during the day and have a fan on instead. Our bills haven’t gone up a lot compared to previous years. 77 is actually comfortable. The problem is the air is not circulating/moving, so your AC works overtime because you tend to lower it so it keeps turning on and moving air around. We even feel the need to use a blanket in the living room because 77 with a fan directly pointed at you actually feels cold.