Those $100 ones don't come with a cage. If you do want a cage, you'll end up with $180 in total, with zero warranty.
Article mentions: "Apple finally approved our driver for both AMD and NVIDIA"
Does not mention Intel (GPUs). Select AMD GPUs work on macOS, but...
Macs (both Intel and ARM) support TB, but eGPU only work on Intel Macs, and basically only with AMD.
Good news is for medium end gaming choices are solid, and CUDA works on AMD these days.
Fortune favors the bold my friend.
I own one of these, the cage is just a piece of plastic. Anyway, I don't think 80$ is that big of a difference here. I can't really afford a 4k Nvidia GPU. Intel is my only hope.