Facebook advert

I'm stepping up the marketing/visibility drive with 2 Facebook initiatives; firstly I've put an ad on their classified ads section (free) giving the details of 'In the Valley stories' and the smashwords URL with the coupon code (GR96T)which can be used to get it free.
Secondly, I'm trying a 24 hour paid advert. from 6am Toronto time Thursday to 6am Toronto time Friday, targeted at USA residents who speak English and read books. They estimate reaching about 22,000 people per day with this, at a cost of 47cents per 1,000 people; for a total of around $10+ (0.47 x 22 = $10.34).
They have analysis software, counts % clicks- number of people who see it vs number who click and go to my page; then further stats, from smashwords number who go and download; see if there is a reasonable return for the $10 investment.
Would be better if I could direct traffic straight to either smashwords or my own sales page but they give very limited word allowance in the ad.
I will be monitoring this tomorrow for sure