Yes, it works!
But you will need to know a lot of things regarding the Adwords policies & tricks to keep your account safe from bans. Also its really heard to drive traffic if your landing page is about cpa products. However, people are doing this staff cause they're doing it for a long while & they know how to cope with Adwords.
If you're a newbie, you must learn the things first before jumping on Adwords threshold burning.
Regards!