REVIEW
I received a review copy of the spun content posts. This is my unbiased review.
I received 10 posts in my report. All links were live with obviously spun but readable content, and with my anchor text (surprisingly) naturally placed in the text. Each post had a different image, which is a nice attention to detail that seems to get missed in many services. My anchors were generic, however, so that may have made it easier to weave in. Posts were on inner pages on sites with hundreds of indexed pages and each with unique themes. The sites actually look good aesthetically, though they're obviously full of PBN posts. It's worth noting that the OP makes mention of "highly niche inbound links back to your site", but that must be a different package, because none of the sites I saw were niche-specific.
Here are the metrics of each of the root domains (PR/DA/CF Root/TF Root):
#1: 2/20/14/0
#2: 2/19/18/8
#3: 2/35/6/2
#4: 2/17/8/10
#5: 2/24/17/3
#6: 2/20/19/1
#7: 3/18/11/0
#8: 2/13/12/2
#9: 2/14/13/0
#10: 2/21/13/7
I wasn't able to check backlinks on all of them (only free resources at my disposal), but the anchors/sources of links were reasonable, though less than pristine. In each case that I looked at (half of the sites), there were either links from Chinese/Russian sites that I could find or Chinese anchor text. Sometimes these were the most prominent links, sometimes not.
At $2.2/post, this is a very inexpensive service, and if you go around expecting the sun and the moon, you're just not in touch with reality. For the price, I'd say this is a fair deal. Certainly, if you're going to insist on perfectly clean domains, this may not be for you, but then you should really be building your own PBN, which is going to cost you a heckuva lot more than buying this service will. If you're looking for some nice juice from domains with good DA metrics, this should do nicely.