Facebook is a huge pile of junk when it comes to actually making sales, yeah you can get traffic with ease, but it's not targeted and just random people.

Facebook is trying to push their crap on you because they want your money, that is it.

Good for traffic, YES, good for sales, NO.

Yeah you'll get some here and there, with enough traffic you always will, but it isn't as great as Facebook themselves try to make you believe.