I think I would pay $100 for a toaster oven with a decent PID controller, controls that made sense (what does "200F" on dial 1 and "Toast" on dial 2 even mean?), and had a decent chance of working in 20 years. I've already got a pretty decent set of sensors + heavy duty, self-updating neural network between my shoulders, thanks.
If you would be OK with a little DIY work, Google for things like "reflow soldering with toaster oven". There have been many conversion projects to adapt cheap toaster ovens for hobbyist reflow soldering. This involves putting in some good temperature sensors, and bypassing the built-in controls to put the heating elements under the control of an Arduino or similar controller. Some even add a cheap graphical LCD that…
You can drop the insulation for food use, but thats one of the cheaper parts of a build.
Since temperature is important for reflow (melt the solder without melting your leds and connectors) they have good ways to calibrate them.