Is the G4M Solus Electric Violin Midnight Ebony worth buying at £300?

The listed best new price is £300. That makes it a candidate for your shortlist, rather than an automatic recommendation: there is not enough information here to judge its sound, build quality or playing comfort.

Before buying, confirm the instrument size, what comes in the box, and what equipment you need to hear it amplified. If possible, try it with your intended setup; comfortable playing and a usable sound matter more than the finish.

Budget for any missing essentials, too. The Hidersine Premium Unidirectional Carbon Violin Bow 4/4 is listed at £200, but only consider it once you have confirmed the appropriate size and whether a bow is already included. Don't spend the whole budget on the violin before checking the complete setup.