/diy/ - Do It Yourself

I have been considering buying a 3d printer and had some questions.

1.) will a 3d printer save me money/pay for itself over time considering I do a lot of /diy/ stuff and almost never pay people to do or fix stuff for me
2.) How much does the plastic cost? Like how much would it cost me to print something like pic related in plastic
3.) whats the best bang for buck price range? I dont really have a budget and could spend $1000+ if I wanted to but most things have a point of diminishing returns