You don't really have to be a freak ass ads clicking guy before trying
to promote your product using such means.
Facebook ads is PPC so you pay only for clicks so this should
take care of your fear.
Over to the other question, Facebook ads is effective if you do it
right like every stuff out there.
I implore you check if there is category for your niche, you can find out
by trying to create an ad and cancel before it goes through.
If you find your category/niche then good luck and start preparing.
Make a reasonable budget of $100 monthly and get a squeeze page
collecting names of your visitors and giving them free stuff, later on
your can promote your item after trust is built.
With this strategy you don't loss your monthly $100 completely,
you have something to show for it. Secondly, create an eye catching
page for your business which is even a must if you are serious,
promote your page for likes using $100 monthly too.
Here is how this works, each time you make a post on your page,
people who have liked your page gets to see it and above all their
friends gets to see it too.
For example, if you have 100 Likes to your page and each of the
people that Liked your page has 120 friends each,
whenever you make an update 100x120=12, 000
gets the chance to see your post. Just remember to narrow
your target market and use any of the above strategy and you will rock.
This friends also stay on your page for life giving you free advert
whenever you like.