Here is my review of the service..
I bought the cheapest (Bronze) package, just to test the service out for future sites and clients. The site I used was already in the top 15 for five high-comp keywords, with some serious, big-box brands directly above. This is a product site in the animal niche, with no ads or monetization other than links to the related ecommerce site for checkout.
At first, I was not impressed, with only a partial report and one of the sites in the report showing as highjacked in google. After a few promptly answered emails through the ticketing system, I settled down and was prepared to wait a few weeks. Within about 6 or seven days, I started seeing some wild up and down swings on the serps for my keywords, which is normal with a bunch of new links. After it settled out here are my results:
kw1 - #12 to #6 - +50%
kw2 - #9.1 to #6 - +34%
kw3 - #32 to #11 - +66%
kw4 - #9.9 to #6 - +39%
kw5 - #10 to #8 - +20%
Before buying this package, I did some serious on-page work, adding fresh content and speeding up the load. Other than that, this is the only difference. I can't tell how much of the positive rise in serps is because of one or the other, but I climbed up against some pretty fierce, high-power competition in a short time, with the cheapest package.
I can't wait to use this on one of my less competitive sites with one of the bigger packages, that should be awesome.