good job for this idea, sounds interesting.

at first impression terrorities could be smaller

Thanks. My first impression is that it was small. But it may need some playtest to have a better feeling.
Same for prices. Maybe it is a bit cheap...

Hm yeah it depends on your playstyle i guess. I Made my decision based on your picture, didnt check it in the mod yet.

Do you have any type of logic as to the price of each plot? If so, any logic preventing a deadlock? (Requiring oil products to proceed, no oil in currently owned tiles, etc.)

Items are required in cost price according to what you can craft (recipes unlocked) . So it wont require sulfur until you unlock that tech

Looks a lot like the mod Nilaus uses on his current factorio streams :-)

Do you know the mod name ?

Looks a lot like the mod Nilaus uses on his current factorio streams :-)