It increases costs of a solar system to about 1.5-2.2x (so an extra 50-120%), not several hundred fold. The hybrid inverter is slightly more expensive than a no

It increases costs of a solar system to about 1.5-2.2x (so an extra 50-120%), not several hundred fold. The hybrid inverter is slightly more expensive than a normal inverter, then you add the 4-16 kWh battery which is pretty cheap nowadays.