I've tried ads from facebook and never had any success from my side job of making jewelry. I spent $1500 with zero returns and did everything the internet suggested. I think theres just too much competition. People on facebook are not there to buy stuff really. They are there to poke around in their family and friends business and look at pics and vids and express their opinions. I have a friend with 250k fanpage likes all of which he grew for free over 3 years. And he still isn't able to convert them to a sale on his website. Big well known businesses can post a new product and get sales. But the little guys are lucky to get a conversion unless they make it big.