That's cute 30 pages a month for 5 bucks, you may be interested in ab testing depending on the study level of the students, university usually requires way more

That's cute 30 pages a month for 5 bucks, you may be interested in ab testing depending on the study level of the students, university usually requires way more pages per month, but 15 bucks to get unlimited seems too high imo. (and unlimited may generate for you too high costs ;)) Otherwise seems nice, will test, good luck!