As far as value goes for resteem services it is really hit or miss, but these services are so cheap i always feel they are worth it, advertisent always cost money. But the right people have to see it to get big upvotes and u never know when that might be. certain days of the week get much more exposure than other days. Also, this post wasnt all that attractive, i honestly wouldnt have read it if u didn't personally contact me. U should have a more catchy headline and first sentence to get people excited to read ur article. Reading dry facts is not generally what i get on social media for so u have to give people a reason to read it. A title and first sentences will make or break even the best written article.
Anyhow, best of luck on ur future posts, hope some of this info helps cuz u sure put out informative content that i feel people should read :)