Last time I was installing panels, they were cheap even the mono ones, but there were other costs like mppt charger, batteries, inverter and DC wires (copper is

Last time I was installing panels, they were cheap even the mono ones, but there were other costs like mppt charger, batteries, inverter and DC wires (copper is expensive) when I summed it all, I got to the breakeven point in 10 years. Now I am thinking about grid connected setup but still AC module isn't cheap if they were only $50-$100, like the enphase AC units embedded into solar panel itself, it would be worth it. But it nearly doubles the price so I've not installed any panel yet.