I bought these
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
from Amazon for DD to make cinnamon rolls and freezer meals to sell. I know you don't need 30, and it looks like they are not available anyway, but they are so much nicer than the ones that I have gotten at the dollar store or grocery store. They are pretty deep, and a little smaller on the bottom than 9X13. The top measures 9X13.
Maybe you could find something similar with less pans.