That sounds about right for center-based care. Of course, it often depends on the location. I'm guessing the $10k per year comes to about $180-190 per week. My 3 year old's preschool is near Oak Lawn and we pay $170 per week x 50 weeks = $8500 per year. They give two weeks tuition-free vacation.
Something you might consider that's more affordable is home-based care. This is usually a family's home where the mother takes in children to care for in their home. Many home day cares are licensed.
A good way to find one is to go to the state licensing website which is Texas Department of Family and Protective Services (or something like that). You can do a search for something near you and also see what their most recent inspection says.
You can also call childcare group. They are a refferal agency and all you do is tell them what you're looking for, what location and what price range and they give you referrals.
Good Luck.