New inspectors typically price near the $300 end while building a referral base with local real estate agents. Once you have a track record of thorough, defensible reports (and the liability insurance to back them), $425 becomes realistic, and inspectors with a strong reputation in competitive markets routinely reach $650+ for larger homes.
A rate only matters if it actually gets collected. Once you've picked a number, send a professional invoice right after the inspection, and use the inspection agreement generator so scope and liability limits are in writing before you walk the property.