No, I made one sale about 6 weeks ago, and none since. Getting hits from Facebook is easy !
What I have done now is target my age group a bit better, and decrease my bid price. Some businesses are paying very high bid rates, which spoil sit for use and will probably be of no real ROI fro them, but they may be able to hide it amongst their advertising budget.
This is because I must get sales or there is no point in advertising on Facebook. (I have written and told them this)
Sure it creates interest and I "may" get a returning hit in 6 months time.
I still think Facebook is better than Google for our product which is unique in the world so nobody is going to search for one !