If you are just starting out and want a dutch oven, buy a 12 inch Lodge cast iron dutch oven and you will have a high quality, versatile, camping tool that will serve you well - end of story, go start cooking. Don't compare prices, don't try to find the best deal, just trust me and thousands of other dutch oven cooks that know Lodge is a good investment.
Or, check out some other options if you want...
Dutch ovens come in different styles, metals, sizes, and qualities. Take the following list with you to the store or refer to it when you buy online to make sure you purchase a good, usable item. It's easy to buy the wrong thing so take a few minutes to understand the features and costs of various dutch ovens.
LODGE Dutch Ovens
|8"||2||3"||11||Side dishes, vegetables, desserts, and sauces for 2 or 3 people|
|10"||4||3.5"||15||Side dishes, vegetables, beans, small roasts, desserts, and sauces|
|12"||6||3.75"||20||Roasts, poultry, fish, stews, potatoes, beans, rolls, breads, and desserts|
|12" D||8||5"||23||Standing rib roasts, hams, whole chickens, stews, potatoes, beans, rolls, and breads|
|14"||8||3.75"||26||Larger roasts, chicken, stews, potatoes, rolls, breads, and desserts|
|14" D||10||4.5"||28||Standing rib roasts, hams, chickens, stews, potatoes, rolls, and breads|
|16"||12||3.75"||32||Large quantities of meat, stews, potatoes, rolls, breads, and desserts|
MACA Dutch Ovens
|9"||5||6"||17||Soups and stews, beans, vegetables, and sauces|
|11"||9||6.5"||24||Smaller standing rib roasts, small chickens, vegetables, stews, potatoes, and beans|
|13"||12||6.5"||41||Standing rib roasts, hams, whole chickens, stews, potatoes, and beans|
|15"||18||7.5"||49||15lb. turkeys, large cuts of meat, stews, and beans|
|17"||28||9"||73||Larger turkeys, large quantities of meat, stews|