Consider it a lifetime investment --- both for yourself, and your heirs. Cast iron, if thoughtfully maintained, will last forever.
Mike Barkley wrote:
No kidding. Most of mine belonged to my grandmother & it still has another 100 years left. I use it almost every day. She did too.
I estimated (guessed) she bought a pan for $5 in 1935. That calculated to 0.00017 cents per day so far. Not bad.