I have only SpaceChem from that puzzle pack, so I guess in theory I could buy it, with a suitable discount.
I guess the main problem is that it contains also games which apparently mimic programming. It just feels like a total waste of time to me personally because if I am going to learn some programming or scripting language, I'd rather use my time on something real, like learning more of python, bash, Ansible, whatever (I have some projects at work where I have to do something with those). It just feels... more productive to do the real thing, I guess? And kinda pointless do it in a game with a fake programming language, even if those games may teach you about programming principles and shit...
I think I feel similarly about games that try to emulate some mundane things, like repairing your car, building your PC, or cleaning your room. I get enough practice with those activities in real life (well, not really repairing my car anymore esp. as it is an electric car, but back when I fixed my car, I hated doing it).
So yeah, maybe pointless for me to buy those games, if in the end I probably don't feel like playing them... but then maybe if I tried them, I'd see the errors in my ways and find them enjoyable, who knows.