G Master lenses are worth it for certain types of users. If you are looking for the absolute best quality, perhaps because you make large prints and need exceptional sharpness, then the G Master lenses are well worth the investment. But, if you are more so a casual user or even someone who predominantly makes content for social media, the quality of G Master lenses may not be noticeable on the platforms you use. You can save yourself some money and go with either third-party lenses or the Sony G lineup and still get truly excellent lenses.