If you deck your baby out in the Armani Baby range of clothes, then sure: kids are expensive.
Kids are as expensive as you you make them
But there's a lot to be said for the argument that kids are expensive as you make them.
For example, when I had my firstborn we used the crib I slept in when I was a baby myself. We did not buy a complete nursery, but used my old changing table. And when it came to baby's clothes, I bought a lot at H&M.
As kids get older they do get more expensive
As the kids got older, there were of course additional costs. For example I invested greatly in wooden blocks. It seemed like a solid investment! I pictured my kids building castles and playing for hours on end. But unfortunately stock in wooden blocks plummeted as soon as the kids spotted bright plastic toys that made screeching noises.
It wasn't until high school that I started to feel the financial strains more. But even then, it was very do-able. There are lots of great second hand shops where you can get lovely clothes. You don't have to break the bank to look good. I get my own boho style look straight from the English eBay website.
So in answer to my question: 'Kids can be expensive, but a lot depends on how you raise them.'
If you teach them money doesn't grow on trees at an early age, they won't expect it to!