There's no question about it, children do cost money.
However, I think the thing is, as with other expenses in life, you can live on a budget quite easily. It seems to me that it's very easy to get pulled into thinking that you "need" to have this or that. And especially where our children are concerned, you feel like you're a "bad mom" if you don't get something that's top of the line or "the best". In actual fact, a lot of the extra features on things are totally unnecessary.
It's not to say don't splash out sometimes. I things as much as anybody. But after a year of going gung ho with my first, the bills were not fun. And when my husband left his employers of nearly 13 years to be a partner in a start up company, I tightened our belt. I graciously took hand me downs when offered and thought twice about any major purchases. It was an eye opener about what was really needed.
When you're ready, a little bit of planning and budgeting goes a long way!