At $45 this is a budget listing; the maths still has to work, and it works when the page is topical and the host is active.
The commercial value here is different from a general blog: a link from a technology title is usually read by people who will mention it somewhere else. That is why an article with a real number in it keeps returning value a year later, while a listicle about trends dies in the archive. Give the editor something they can cite.
Within the Technology section of the index — 53 listings, 41 median DA, 15.5k median traffic, $40 median price — this placement is 12% above the median on cost and about 5.5× the index median on audience. Listings in that section range from $30 at the cheap end, so the question is not whether $45 is high for a link, but whether it is high for this one.
Tech audiences are the least tolerant of marketing dressed as engineering, and the editors of these sites know it. The pieces that get published, indexed and then linked to by other people are the ones with a claim, evidence and a reproducible method. Anything that reads like a feature list gets cut back to two sentences and a bio link.
Our observation on this host is do-follow outbound links in editorial content. That is the attribute, not the value: the 78 DA and 30.5k monthly visits are what the attribute is attached to.