Not being paid enough for an article

Hello! I've recently been employed to do write articles as a freelancer. They advertised this as a student role, on our student work board.

On beginning the role it was advertised I'd be doing freelance occasional 500-1000 word articles, I was given a 400 word tryout article to write. I did this, this was unpaid, but they said they liked it and brought me on board for this. They mentioned from this point that they'd be charging £30 an article which immediately made me skeptical as I'd been looking online at standard payments and they'd usually be about £120. But given that the article was pretty easy to get through I agreed.

They then assigned me three 1100 articles on very niche subjects. Obviously I can't mention these here otherwise they might catch on I feel dissatisfied but nevertheless they are incredibly difficult to gather information on.

Due to the added length and tricky research I feel particularly undervalued as each article would likely take at least two days each and that being severely under minimum wage.

So what should I do? Should I just bite down, do the articles and get paid or should I ask whether it would be possible for the rate to be higher? Or should I have done this before agreeing? Is it irrational for me to expect more? I don't want to seem entitled, but it does feel as a student I'm being taken advantage of by this agency.

Hello! I've recently been employed to do write articles as a freelancer. They advertised this as a student role, on our student work board.

On beginning the role it was advertised I'd be doing freelance occasional 500-1000 word articles, I was given a 400 word tryout article to write. I did this, this was unpaid, but they said they liked it and brought me on board for this. They mentioned from this point that they'd be charging £30 an article which immediately made me skeptical as I'd been looking online at standard payments and they'd usually be about £120. But given that the article was pretty easy to get through I agreed.

They then assigned me three 1100 articles on very niche subjects. Obviously I can't mention these here otherwise they might catch on I feel dissatisfied but nevertheless they are incredibly difficult to gather information on.

Due to the added length and tricky research I feel particularly undervalued as each article would likely take at least two days each and that being severely under minimum wage.

So what should I do? Should I just bite down, do the articles and get paid or should I ask whether it would be possible for the rate to be higher? Or should I have done this before agreeing? Is it irrational for me to expect more? I don't want to seem entitled, but it does feel as a student I'm being taken advantage of by this agency.