I think the fastest I've got it going is like 90 seconds.
Most of the ingredients are measured in tablespoons. I use a scale and just pour the flour into a bowl, add the dry ingredients on top, and throw it in pan.
Plus it just tastes better and makes the house smell amazing.
I do 1.5 lb loaves. I also buy in bulk when things are on sale. All 50 loaves were made with just what's in the pantry (which is why my estimated price-per-loaf is just a guess).
But the main thing is homemade bread just tastes better. Even if it costs more in ingredients, it's still worth it