Hi mate, welcome to the forums.
In terms of how much money and time bodybuilding will take, the simple answer is whatever you can afford! The more you give it, the better your results will be.
Expenses are pretty simple really, particularly when you're just starting out. There's the gym fee, and the food bill. We eat twice as much meat as most people, and you'll probably want to buy a protein powder. But then you're not eating as much junk food, so there's a saving there.
As for time, you should probably allow four or five 1-hour sessions a week for training, plus cardio if you need.
It's quite a commitment, but the satisfaction from your progress is huge.