$15 seems to be the new norm for low end bank platform shops. Such a shop should take 15 minutes or less on site, be primarily multiple choice responses and have no more than a few sentences of comment. The report should take less than 20 minutes (though not necessarily the first time when you are learning the report). If they are asking for more than that, they are underpaying.
As for this particular company, I have never heard of them, though I do note that they are members of the MSPA.