I am going to run ads (soon) and they generally do estimates for what your views MIGHT look like!
So what I'd do is maybe spend 250 (if you spend more than 26 bucks, you get 100 credit depending on your country!)
I checked using one of my vids, but spending 250 for promotion has a chance to give you 14K - 28K views! (500 gives 28K - 42K )
Which is a lot, and if you think about it, the more views it gets, you get somewhat promoted more, so even after your ad ends you'll probably more than likely get way more than that!
best of luck to yee! I think ads are the best use of your money! That's what I'd do with it!
Can anyone invest in that? Even somone that is just starting? I think that can be a good investment, if it gives you all that views, interesting. If you have the money for that,obviously.