COBRA means you’re still getting insurance through your (former) employer. How much does the same insurance benefit cost if you buy it fully on your own?
In my experience you can’t even buy a similar plan as an individual. And definitely not at the same price.
It seems yes there is a reason if you need integrals. From TFA: "You can also try having Wolfram Alpha compute it, and it will time out. We will need to be more creative."
One of the editors of that book wrote about Derek Jones’s book “I think (at least I hope) this will influence software engineering education [more] than anything I've ever done”
In my experience you can’t even buy a similar plan as an individual. And definitely not at the same price.