Yes but you need a constant flow of traffic to your niche website. And try to rank your website for some "gold mine search terms" otherwise you might end up losing your time for pennies. Amazon is a learning curve, however there are some tactic that can bring you thousands monthly. Nothing.. about Blackhat anyway.. Al.
It takes lot of time, energy and SEO technique to make decent earning from Amazon. Don’t give your day time job, start with your project and see how it worked out for you.