If you are a ClickBank affiliate there is one guaranteed way to compete with rival affiliates and win the customer sale.
It's to tell the customer that after the sale you will send him a bonus product.
The problems are in finding a suitable bonus and arranging delivery of the product
These are solved with a tool called easyClickBank Bonus Manager (developed by two top ClickBank experts).
There's a free trial with nothing to install or to pay.
Also there's a lucrative affiliate program offering recurring commission