Avocado is probably one of the easiest baby foods to make, and it's full good vitamins and minerals for a growing baby! I couldn't really tell you what the cost of pre-made avocado baby food is (I haven't seen it, do they make it?), but I figured with avocados on sale at $1 each last week at Rainbow, it's probably cheaper than those little jars. I got a little over 12 ounces from the two avocados I used, those jars are typically 2.5 ounces, so cost me about 40 cents per little store-bought jar.