We each manage risk differently but for me, the cost of the Apex and the added functionality far outweigh the relatively small cost. How do those alerts work with the heater? If it stays on for x hours, you get an alert? If it doesn't go on for x hours, you get an alert? If not, you could end up cooking or freezing your fish if you don't also get temperature alerts. My Apex has saved my tank from total disaster any number of times over the years in situations where there would be no electrical draw alerts. My low and high sump level float switches have prevented the tank from overflowing or the return pump burning out. The temperature sensor has shut off a heater when its thermostat broke in the on position. And my moisture sensors have turned off an RO/DI when the float switch stuck overflowing the storage tank. Luckily the moisture sensors under the 340g tank have never been triggered, but if I got that alert, I'd get my butt home in a heartbeat if only to witness the disaster in real time!!
I'm also excited about the Mindstream and it would be great if it was integrated with Apex simply from a tracking standpoint, but I use a CalRx so would not easily be able to take advantage of that added functionality.