Consider it from an advertiser prospective if you make $5 per customer, and it costs you $1 to get a customer from Facebook, then you'll quite happily keep payi

Consider it from an advertiser prospective if you make $5 per customer, and it costs you $1 to get a customer from Facebook, then you'll quite happily keep paying Facebook $1 for as long as you keep getting customers. If Google undercut them and offer you ads for $0.50, you'll buy both ! I currently buy ads at Google, Facebook, Linkedin and PlentyOfFish. Find me another source of effective advertising and I'll advertise there too. Unless your margins are razor thin and you have tiny volumes, it seems unlikely that the extra time you have to spend managing your ad campaigns would justify not using them. After all just because the CTR of Facebook is smaller than Google it doesn't mean you have to invest more time into it because your ad has to be seen 100x more often to get the same CTR.