According to the U.S. Bureau of Labor Statistics, prices for internet services and electronic information providers were 30.28% higher in 1997 versus 2017.
Between 1997 and 2017: Internet services experienced an average inflation rate of -1.31% per year. In other words, internet services costing $50 in the year 1997 would cost $38.38 in 2017 for an equivalent purchase. Compared to the overall inflation rate of 2.13% during this same period, internet services inflation was significantly lower.
Raw Consumer Price Index data from U.S. Bureau of Labor Statistics for Internet services and electronic information providers: