PPC usually does not make sense for smaller per sales pricing. The numbers make even less sense for Amazon affiliate marketing.
Perhaps lead generation instead?
Don't try to initially sell your app, instead, obtain the contact info for your potential customer, and you can sell him/her many different things, including apps, but also books and other products/services.
Also, you will be able to track these customers and know which are most likely to respond to your multiple offerings.
Perhaps lead generation instead?
Don't try to initially sell your app, instead, obtain the contact info for your potential customer, and you can sell him/her many different things, including apps, but also books and other products/services.
Also, you will be able to track these customers and know which are most likely to respond to your multiple offerings.