Originally Posted by DubfromGA
I prefer the type that will allow coals to be stacked on top.
Those are the camp Dutch ovens. They have a ridge to keep the coals and ash from falling into your food when you peek. They also have feet so they don't crush any coals that you set them on.
(If that link doesn't work, just search Amazon for "Lodge Logic Camp Dutch Oven.")
If you're really planning on camp cookery (vs. putting the DO in a Weber kettle or the oven) this is what you want.
I wouldn't worry about used. Just put it in a hot camp fire (and allow to cool slowly) or run it through the self cleaning cycle in your oven and any residue and seasoning will be burned off.
An interesting article on seasoning CI.