Have 4 children; none planned.

Was done at 3, but 2.5 y/o DD had her own ideas. A little sad she won't be as close to her older siblings (other kids are 16,12,9) and toyed with having another, but I'm all babied out. Have 3 girls, 1 boy.
Had my first 3 young (I'm 31), so parenting my 2.5 as an "older mom" is a new experience. We do okay financially ($110k); both DH and I are relatively young in our careers, so there's the hope that we'll do better over the next few years. Kids never want for much and we plan yearly vacations with small trips throughout the year.
I agree with another pp. It can be incredibly stressful, but also incredibly wonderful and rewarding. I love having a larger family. If I won the lottery tomorrow, I'd have 1-2 more.