About to have #2 (in June) so I'll join in.
$240K. 2.5 year old and -2 months.
Day care for the 2.5 yo works out to almost $1600/month. When we add the infant it will pretty much double (we get a small discount but infant rates are higher). At that point it will be almost as much as our mortgage.
We're doing fine because we have no other debt (minimal student loans paid off before we had kids, 1 car bought with cash, etc). We also didn't have kids til our mid-late 30s, so we were able to save aggressively early which made it easier to have the lowish mortgage, no car payments, etc. We'll put less in savings for 2 years that we have 2 in daycare, but will still be saving some each month (after retirement savings).
If we made less, we'd go back to a 30 year mortgage (we did a 15) and look at cheaper daycare options.