The pricing constitutes to about 10-20% of the complete total bill of a solar PV system. I would advise spending as much as your budget allows for a good quality solar inverter. For a good build quality but also the extra features. Among the features you should be looking out for are network enabled, anti-islanding and maximum power point tracking (MPPT).
Network enabled solar inverter’s data to be sent out, like inverter health, PV generation and more – so long as an internet connection is available.
Anti-islanding is a safety feature whereby the solar inverter will shut itself off in the event of a power outage. This helps prevents injuries and potential electrical hazards.
Maximum power point tracking (MPPT) is a feature that optimizes the amount of solar energy generated and allows for additional solar panels to be installed later for upsizing purposes.