@moozooh This isn't a wage, she is not employed by them. Normally, posting reviews or blog entries would be free, of course they wouldn't give you a lot in a site that pays you.
@BCS Think Yelp, or some blogging platform from the earlier days of the internet: they have(had) no trouble getting people to post there for free. For Yelp, that is a positive: the more reviewers that post reviews on Yelp, the more trust Yelp can project and the more people use Yelp.
Similarly, a site like this is like Yelp, but they actively give you money to write on their platform as a way to attract people. Of course, they make more money
from you than they give, but it's a win-win: they have more content for people to browse, meaning they get more exposure for their advertisers, and you aren't posting your shit for free. It goes without saying that if you made it big and created your own platform, you'd make a lot more money, but the point of this wasn't
really to make Megumi an influencer or whatever.
It's a way to make her feel better about herself while also alleviating a bit on the cost of her meds.
Apparently, there are a lot of sites that pay people to write essays and shit, but for this level of pay, it's clearly not meant to be a full-time occupation. It makes sense to me because if the site wasn't there, you more than likely would have been doing the same for free in your blog. Might as well make 50 yen back.