If you put all of your eggs in one basket, you are asking for trouble. Even if you have the best ideas, best products or best anything else, it doesn’t mean that it will make you a ton of loot. If you have your online widget store, you should also be sure to have a widget blog (with ads and affiliate marketing programs) and maybe even an eBay store to unload widget overstock. This way you are hedging your bets and making sure you have money coming in from other channels in the event of difficulties with one of your streams.
There are loads of resources for making money online as an affiliate. You could source products from ClickBank, Commission Junction, Rakuten Marketing, Share-a-Sale, Impact Radius and many others. Plus, many of the larger companies have their own affiliate programs as well. Do your due diligence and find the right company with a relevant product or service to your audience that you can sell as an affiliate.
How much will you make? I think my best month with Google AdSense was almost $5,000 over the last ten years. That amazing month blew my mind since it was actually near the beginning of my blogging journey. When you go from making zero to $5,000 in a month, that will rock your world. For me, it also got me even more excited because I knew there were other ways to monetize.