55 DA sits comfortably above the index median of 40, which is the level where editors start enforcing real standards.
Educational publications keep their pages for years, which is the main reason to place here: a genuinely useful admissions or study guide is consulted on the same dates every academic year, so a link inside it keeps being crawled long after a news article would have decayed. It also means the bar is set by the site's own reference-style content, and a thin promotional contribution stands out badly.
Within the Education section of the index — 30 listings, 54 median DA, 3.1k median traffic, $40 median price — this placement is 12% below the median on cost and roughly 46% of the index median on audience. Listings in that section range from $20 at the cheap end, so the question is not whether $35 is high for a link, but whether it is high for this one.
Also expect strict link limits, usually one, and frequent nofollow rules on institutional sites. A 55 DA educational page with 2.5k monthly visits is worth having in your profile for plausibility and citation, and you should not expect it to shift a competitive keyword on its own.
Our observation on this host is do-follow outbound links in editorial content. That is the attribute, not the value: the 55 DA and 2.5k monthly visits are what the attribute is attached to.