That's what the boost post button does for you. Because it knows which people like to click the like button and like to comment and like to share posts, but not do anything else besides that.
So it's possible that you can reach somebody that's really interested because of boosting a post, but it's very unlikely. Because you're targeting those people that spend all day on Facebook clicking on posts, sharing them, liking, and commenting. And maybe you're one of those people, not a problem, but those aren't the people that are going to buy
your products or services, especially if you're an eCommerce business.
Another big con of boosted posts is that you don't have nearly as many options as custom Facebook ads provide. Basically, you're just taking one audience
and showing them one ad
And that's his own self-contained thing. It's just like creating a quick ad campaign with one audience, one ad set, and an ad, based on your post. And you can't change the text or image of that post. So if you're running basic Facebook ads for eCommerce
and trying to generate a ton of online sales, I recommend starting a full ad campaign in the Facebook ad manager.