Although this is a useful service, the Amazon Security team may block your site. Even if your site is trustworthy, this increases Amazon's liability for phishing attacks on other phishing sites.
For my travel startup DealScoopr, we saw similar similar results from Facebook CPC Ads - low conversion rates, mostly Android traffic. Google Adwords turned out to be much more effective.
Check out DealScoopr and find great flight deals to visit your friends and family. We'd love to hear your feedback. We're a startup based in Seattle,WA.