I have a set from Amazon of Lodge, so it's pre-seasoned which I loved. It's a deep pan, and came with a skillet, they're both the same diameter so you can use the skillet as a lid. I never put those two pans in the cupboards anymore, they're almost all I use!
As far as a stock pot, I've taken to using a pressure cooker which I love! I found a great cheap one which is a great brand, all stainless steel with the sandwich base and it's an 8 quart so I can cook a ton in it if I need to....you can always cook anything in those, you don't have to pressure cook in the pot if you don't want to, which makes it versatile. Worth looking around.
Thrift stores in our area stink, I envy all you who have these great finds at your local thrift stores!
I did find a legless dutch oven with a lid at a local cheap tool sale. It was a cheap brand I'd never heard of, got it for 10 bucks and was unseasoned. I'm slowly building up the seasoning on it.