I guess you're being rhetorical or sarcastic, but for people who're not familiar with today's gaming market: $35 is a very high price for 2D games like Factorio. Most 2D games are $10~$20. If you take sales into account, it would be much closer to $10 than to $20.
Thinking about games along a single axis (2D vs. 3D) is a weird way to measure value.
You should compare Factorio with other sandbox/simulation games with procedural generation, deep systems, complex logistics, and large modding communities. Examples that come to mind are Rimworld and Dwarf Fortress, which have similar price tags.
