Re: cast iron pots

If you get the one without the legs you will be able to also use it in your house on the stove top or in your house oven. The one with the legs is there so that you can shovel coals under the oven bottom.
I checked out the two sites you are looking at and the price for the cast iron ovens seem high. You might want to check out this site:

Cast Iron Dutch Oven by ShoppingHevanet and What's Cooking America Kitchen

In addition, there are a lot of people out there that do not appreciate the value of cooking in cast iron, and you can find real bargins or steals for some of these items in garage sales.

Good luck