At 40 DA, judge the placement on the page and the neighbours, not on the score.
There is a second job these placements do that is worth naming: they make a young or thin profile look normal. A domain that acquires 40-level links from a spread of ordinary publications, in drips, over months, looks like a business that has been around. A domain that acquires forty links from aggressive networks in a fortnight looks like a campaign, and it is the pattern rather than the individual link that gets noticed.
freeblogbuilder.com has 62 DR against an index median of 51, 24.8k monthly visits against a median of 5.5k, and a placement price of $85 against $70. Where those three numbers point in different directions, the traffic figure is usually the honest one: it is what a publisher has to protect, and it is what decays first when a site starts selling too much inventory.
Where freeblogbuilder.com is not a topical match for your market, buy it for that plausibility and for whatever brand exposure comes free, and put your exact-match anchors on the sites that genuinely cover your subject. That one discipline is the difference between a general guest post strengthening a profile and the same link making it look synthetic.
The index lists this property's editorial links as followed. Availability of a followed link changes with the site's monetisation decisions, so we confirm the tag on the live URL before counting delivery.