BLS says $0.30 is $1.25 today. Each roll was like 30 pictures too (24, but I like round numbers), so like her $30 a roll?

https://data.bls.gov/cgi-bin/cpicalc.pl?cost1=.30&year1=1980...

I'm going from memory, but I recall that both 25 and 36 picture rolls were common and there were some 12 picture rolls. (maybe 15?) And of course there were a number of different sizes - 110, 120, 35mm, disc, each with different sizes and costs. (more film sizes at the professional level as well, but your local drug store had all of the above)