$300.00
It fires up and chimes. Need a DB15/VGA adapter. I have one somewhere .. will likely find it as I go through stuff after closing my shop.
Original keyboard and mouse included.
CRT flat screen is available .. Samsung Syncmaster 753DF – $100
https://everymac.com/systems/apple/powermac_g3/specs/powermac_g3_266_dt.html