It all depends upon what type of doors you pick. Go to the lumber yard and pick out the one you want, and get a quote from them. All areas of the country are different in pricing.

Doors only or prehungs? You changing them or paying someone else to do it? Painted or stained? You finishing them or hiring a painter? What material? What size? How many?

Just stay where you are and relax while I call around to find out and let you know.