Before deciding the number of views I would like to buy, please enlighten a newcomer in Youtube fields. I have a question, maybe not for the OP but for buyers. What would the advantage for buying such a service, for example 100% retention views? Does it mean that via adsense you win more money than the amount spent on the service? I think that depends on the value of the keywords, right? What about thumbs up (likes) and comments? What do exactly you gain from that? Maybe I am wrong thinking that views are more valuable and I should focus on the others. Thank you in advance guys! I am really in the dark on that matter.
High Retention Views = Higher ranking in YT.
You buy the views to get a higher ranking in YouTube Serps, not google (like some people say).
For google you need backlinks, social signals, etc...
With YouTube what you need are high retention views (targeted for your country helps out too), likes, favs, subs, comments, sharing, playlist adds, etc.
In the comments you need relevant ones, with your keyword in them or at least focused around your niche.
It has nothing to do with adsense. (though, i do believe you get paid for the amount of views you get)
The more comments/likes = more engagement in the video resulting in more clicks on your links, likes, comments, favs, etc...
Views are important yes, but theres other factors to take into consideration when trying to rank your video.