I quit calculating the cost a while back. Truth is reloading, or buying cheap bulk factory I wind up broke either way. With reloading I tend to have way more ammo for each visit to the range. I shoot a good bit by most peoples standards. Most times 2 days a week, and bout 200 to 300 rounds per trip if it is just me. If Mrs. M&P is along then I will bring more ammo.
I like reloading, and casting both.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.