Elsevier's Material Science Journals Earn 600 Million USD Subscription Fee Each Year
The subscription fee (for Hong Kong institutional subscribers) of 90 Elsevier's material science journals (print edition) [1] ranges form 492 to 25460 US dollars per year, with median of 5772 USD per year and mean of 6862 USD per year. The subscription fee seems have no correlation with the impact factors of the journals.
If we assume that (1) the subscription fee for print edition equals to that for electronic edition, (2) no discount is offered to institutions who subscript multiple journals, (3) each of the 90 journals has 1000 institutional subscribers in the globe, we estimate that Elsevier earns about 600 million USD from the subscription for these 90 journal each year.
Reference
[1] Journal List