Cost of Shooting Film

Cleaning out my file cabinet, I found 15-yr-old receipts regarding film.  I discarded them today, but it is interesting to note how much it cost to shoot medium format film (120 and 220 rolls).  I did not look at current pricing for comparison.

Each frame cost about $0.30 plus another $0.38 for processing plus tax.
That was $0.72 each time I pressed the shutter button.