Okay, Big Buddy has always had the MOST epic services on here, so giving it a try. Just signed up at the portal (took 30 seconds), made a deposit of $50. Then grabbed my YouTube video URL / channel URL for one of my videos which has been sitting there slowly getting organic views since I uploaded it, 3 months ago.
Currently, it is sits at a cool, low 240 views. It's pretty well optimized for its niche, but not ridiculously/overly optimized or stuffed in the description in any way.
I'm running his service as a mix, here's what I've got running against it:
General Views: 17,000
Likes: 1100
Subs (on my channel): 200
Comments (using the newly added niche type): 60
That used up all but $1.50 of my credit. (so $48.50)
So here's the test,... what does a $50 instant bullet YouTube/mix promotion do (if anything) to my rank, video position in related, etc. - on a medium aged video that's been getting its own trickle of slow views.
Maybe nothing, maybe something.
Time will tell, will post back.
(this is blackhat IM folks, sometimes you just gotta spitball with the best educated guess on a promotion... and test things out)