A.H.
I use an in home provider in Broken Arrow that is absolutely wonderful! Depending on when you need to start, I'm not sure if she would have an opening or not. She is really good about working with your schedule if you only need her part time and she's very affordable. If you'd like me to ask if she would be available, let me know and I can get you her name and number.
I don't know much about the prices of centers, but if you're looking at full time in home daycare, it can run anywhere from $100-150 a week, per child. Of course, I'm sure someone would work with you about a discount for having more than one child in there. I'm sure centers will be more expensive, but it's been a long time since I've checked on those. Good luck!