It's definitely bigger than we anticipated. I'd plan for 2 or more hours depending on how interested you are in the subject.

So you know, it's not a big building nor does it "stand out" (unless you were looking for it, you might not notice it). It's tucked away in a residential neighborhood, but a few blocks from the main drag. It's best described as a "mom and pop" type of museum--no frills place. That being said, it's certainly an interesting museum, just don't expect it to be more than a 1-2 hour visit.

Hi! I believe it's $10 for adults...I'm a senior and I think I paid $9.00. And yes, they do accept credit cards! As far as food, I didn't see a café or anything onsite, but a number of restaurants are nearby. It's Houston after all!