I just got a review copy of 1 link delivered to me and this is what I have to say about it.
The metrics of the page my link was posted on is as follows (this is for root domain without www):
The link is posted on NON-Secured WWW (I would really advise you to switch to let's encrypt SSL at least) which has stats as follow (for some reason):
Don't mind the ref domains as site profiler isn't really accurate at this point.
I checked it with ahrefs and it had 4.8k ref domains just as stated in the report.
The content was unique and readable and related to the niche. Post used one featured image and one more image posted within the content (I kind of was missing YT link in there but its true I didn't specify anything). This is okay.
Domain name though ... you might want to make it more specific on what you are selling (make categories of websites that you have). It's weird to have a general blog about everything on a domain name that screams "eg: umbrella store"
Design of the website link I got, nothing special to be honest like many other "PBN sellers". Logo was unique (again nothing special) and the general feel of the website screamed out "PBN" to me

obviously this is for the metrics fans.
Can't say anything about rank improvement as the link hasn't even been indexed yet (this might take some time I assume).
No about us/me and contact page and no social media profiles have been made (at least for this site).
At $10 a link I kind of would expect those things to be there.