When I tried to replace the bulb, I used the most expensive one near the rear. That’s not an easy task
When replacing that bulb, there is wiring involved in the control panel. If you want to replace that Near Infrared bulb in the rear of the toaster oven, you have to take the entire thing apart. Having taken the toaster oven apart, I ended up throwing it away. I just bought one for $176 i.e Panasonic NB-G110P toaster oven.