I did some math earlier today. I did the SAME math a decade ago, after having shot $74,000 worth of film and processing equivalent using Ektachrome 100 36exp slide film and good lab developing as the baseline, using a Fuji S2 Pro d-slr that cost m,e $2,400 new.
Today's math went like this:
Fujichrome Provia 100F Professional transparency film is $9.75 per 36-exposure roll from
B&H Photo. In a 5-count pack it is $48.75, or $9.75 per roll.
To save yourself hundreds of dollars in bus,train, or gasoline costs, let's use pre-paid mailers to have the film mailed in and mailed back as processed slides, at $10.49 per single-roll mailer.
1,000 images divided by 36 exp. requires 27.7777778 rolls of film (call it 28 rolls)
28 rolls of Provia 100F is $273.The 28 mailers at $10.49 costs $293.72 Slide storage pages for 1000 slides is $12.98 (ignoring filing cabinets/shelving/binders/other storage options).
$579.70 per 1,000 color slides of 100 ISO speed. Let's call that 58 cents per shot.
Now, let's take a $399, 24-megapixel d-slr camera from Nikon or Canon. Let's give it a conservative 100,000-shot shutter lifespan. 100k divided by $399 comes out to a per-shot cost of $0.00399. So, a little bit over ONE-THIRD of one PENNY per shot.
So, that inexpensive 35mm film camera you bought really isn't all that inexpensive when you want to shoot 1,000 pictures. It will cost you $579.70 per thousand pictures in consumables (film,developing mailers,storage for the film)
So, for 100,000 color slide film images made on 35mm Fujichrome, the cost is $57,970. And 100,000 d-slr images from a Nikon D3200 is $399.
Hard drives to store 100,000 24MP digital negatives and thousands of work/index images? $279 at today's prices.
My computer/software costs per year since 2007 have worked out to a little over $750 per year (Mac tower, then Mac iMac, Lightroom, PS CC). I am a "slow upgrader" though. I realize that the faster, better computers that could shave minutes off of a batch process are still limited by the slowest part in the chain--which is "me", a very slow, obsolescent, 1963 model.