So......... This year. I spend approx 600€ for this test. At first I thought: well, get 2 suppliers. Then, well: 3 is best.. Finally, I ended up with 5 suppliers. #suppliers 2 expensives ones, 2 very cheap ones (2$ per blogpost!), on medium price range. always #ammount always 10 blogposts. except one supplier with 25 that was the cheapest option there. #sites niche diet, fitness, education, consumer articles #competition it was rather medium competition. but my sites did not receive any strong links for like 3 years, some were not even updated for years.. some even did not rank at all . true.. Here are some conclusions #1 One Site got hit very hard with google dance. Took like 6 weeks to calm down and dance from #67, to #xxx, to #96, and finally to #17 #2 the "cheapest" suppliers provided the best value/ranking. the most expensive one even caused the google dance! #3 it takes approx 5 weeks till the google rankings increase. one site, it even took 2 months to climb form #17 to #8 some sites, even after 3 months, are still climbing. #4 "guru seo bullshit" and onpage factors... believe it or not. in the end. it is strong backlinks and anchors.. i spend all this $$$ to make me disbelief myself all this bullshit crap on over-optimization of onpage... get strong backlinks, find some medium competition to rank . have patience #5 bing dont forget bing. although some of the keywords / sites did not reach #1, they DID in bing. traffic is very low, but at least i rank there.. #6 supplier communication some really got annoying to sell addtional links to me.. some were very closed to communication. some took very long time to update some links.. ... in the end, it was mixed. and it was no clear "this one has the best customer support". were one wasreally chatty, he tried to sell me more. #sites offline one (even the expensive one!) supplier supplied links of broken sites and even claimed "it is ok if some sites are offline)! so guys, track your links. people respect what you INSPECT! #DA quality all sites I checked were ok. no backlink spam checked T1 with ahrefs. #post quality some post was hand written (expensive supplier). other was well-spun. I personally, dont care. the well-spun helped ranked anyhow. SO MUCH FOR GURU BULLSHIT. #sites used nearly all sites used expired domains with natural links. but most sued expd and boosted them with links..... #statistics it is hard to to a good statisticcal analysis of all this..... I have to put in some metrics, serplap rankings, ahrefs and some gut feeling. cause, for some major test, I would need at least 10 projects and 10 different suppliers.... but still. all this gave me some deep insights #low volume vs high comp it was sad to find out, that low volume often equaled strong competition... thought otherwise.. but even excat mathc 1000 search /month with #1 being a old domain with strong links is not that easy to beat with paid PBN posts.. conclusions in the end, I found my #1 supplier. and a #2 backup. still suprised me how SLOW it was to see ranking improvements... and more expensive did NOT equal better. even 2016 you can rank thin article sites DONT forget bing. and 10 posts dont do a lot in most case. but even on one order it was enough to cause major google dance! PBN links are kind of expensive though and slow to be on safe side. ATM I invest more money in BING ads - I somehow like underdogs Check you rankings with some serptracker. #future I ordered some new package from my #1 supplier. will be excited to see how far the site will go out. #future 2 I need some kind of "backlink" checker to monitor broken or offline links. I know it will happen. Some screens: Google Dance: https://gyazo.com/ffb0caba52db732e619bad6d015bfe72 #3 https://gyazo.com/0a410d1bafe57c0fedfa1bb4b4ed8a33 Site still climbing https://gyazo.com/12a4edc97352fc0be608b4f89b7e3771 Dont ask me about monthly searches. that dont count shit to measure anything.