I honestly can't remember a number for purchasing film when I first started shooting it seriously (1958!) but I suspect if we find the numbers we will find it is cheaper today, adjusted for inflation. I recall getting a 20 exposure roll of slides processed for around $1.25. I also recall a summer job after my first year in college where we were paid minimum wage. We "summer helpers" got a raise in August because the minimum wage went up -- to $1.64 per hour! Now before you laugh too hard, that would buy about six gallons of regular petrol at the time!
Anybody got a chart of inflation adjusted film prices?