Day's salary? Right now at B&H a 36x roll of Provia 400 is $6.49. Dwayne's charges $8.95 for processing. Add $4.50 shipping, though it's much less per roll if you have more than one roll processed. Total $19.94. A minimum wage burger flipper earns more than that in three hours, maybe 3.5 hours after withholdings, and most people aren't minimum wage burger flippers.
I will grant that the price of transparency film has skyrocketed, and very recently, so much so and so recently that I wasn't even aware of it until I checked just now as I bought my last batch late last year (about half of which is still in my freezer.) Provia 400 is $10.99 at B&H and a whopping $15.49 at Freestyle. The latter is outrageous when you can get it for almost 30% less from B&H. Still, it's an amazingly good film and it's worth even the $15 to me. (But not when I can get it for $10 just as easily!)
Trying to make film cheap is the wrong tactic. Make it as good as possible, make it the thing to shoot, make it popular, and people will pay for it. You're never going to compete with the marginal cost per shot of digital, which is basically free once the equipment is purchased. So don't try. If people want it they will pay what it costs (I am not talking, obviously, about $50 a roll and another $50 for processing or anything like that - within reason) and if more and more people want it there will be competition and economies of scale and the price will come down, at least some. That can happen, but obviously not to the degree of the old days.