Ebay works nicely for me, I see steady daily earnings which continue to become a higher average as I publish more hubs or tweak the capsules around to experiment.
They only pay per click, but when your capsules actually produce a sale, your value rises quickly. Any future clicks will be worth more for a certain amount of time. I have had better earnings from Ebay than with Amazon. So, no longer use Amazon.
Although at this point I'm only earning pocket change from the Ebay program, it adds up at the end of the month. Ebay earnings gave me the extra boost I needed to reach my last payout. There have also been a few days where the amount has passed over one hundred pennies, and a couple of days where the amount has been a few dollars.
I'm satisfied with the way it has worked for me, I have less than two dozen hubs but Ebay is a consistent tunnel of earnings. I can imagine someone with just a few hundred articles with the right setup would be pulling in a nice xxx.xx sum monthly from Ebay alone.