build me a hotwire cnc cutter

I have ender 5 and 3 to play with. please check out this youtube of this https://youtu.be/QxAzf_hfMh4
And if you look for more of similar youtube you can find there are custom made ones, which boasts of costing only about usd200.

Deliverable;
1. detailed instruction how to make the cnc cutter, with images, photos and drawings.
2. parts list that can be purchased from Amazon, Alibaba, etc.
3. Live involvement using Teamviewer, Zoom, etc.
4. Codes that drives the hardware.
5. Fix issues when it arises during and after this project.

My budget: usd100