If you aren't in the US, you wouldn't know, but law students aren't your standard student, and they aren't notoriously cheap. My law school had an overpriced café in the basement that targeted only students, and it was packed with us every day. We're paying for an education well in excess of $100,000 in tuition alone.
My journal kept our office stocked with tons of treats, just like a dot com startup. We were on the top floor of the building, had a good view, had lots of privacy and quiet, a ton of floor space, couches, a TV, etc.
My journal charged $60/yr and had a circulation of around 1500.
I can't remember what the printing cost was, but that's $90,000 in revenue and zero labor costs. Law students do this work for free because it's the second best thing you can have on your job applications aside from graduating at the top of the class.
So yeah, law students could afford a few subscriptions. :)