All I can say is that, personally, as an online consumer, I only use Amazon these days. I started using eBay a lot because a lot of the times it felt like I was getting good deals on products, but then when you start taking into account Paypal fees and all that, it didn't really seem all that worth it. I'm not sure which site ends up being cheaper when buying products, but Amazon is definitely more reliable and the site is just easier to use. I feel like I'm not alone in this either. Definitely know tons of people who shop on Amazon. 5-6 years ago, it seemed like eBay was more popular, but that's changed now. Take that for what it's worth.