For the most part Netflix seems pretty cheap with their budgets (probably because they value quantity over quality). I remember Bright was supposed to be like this huge studio blockbuster but it's budget is about what those normally cost.
Netflix movies's budget mostly are under $100m.
There are exceptions like Irishman, but they only commit like one really expensive movie a year. After all their runtimes are only 2 to 3 hours while longer tv shows are more important to keeping people subscribes monthly.