Same reason I'm of two minds about Amazon. I disagree with a lot of their practices, but the first time I bought something from a 3rd party Amazon seller, they shipped it to the wrong address (there was a picture of the package clearly in front of the wrong building) and refused to refund due to "it shows delivered". The seller wanted me to "ask my neighbors". The buildings around me have hundreds of people per building. Then told me it was my problem to take up with the shipping company, saying I'd need a police report, all of that. All for a pair of shoes. I went into the Amazon support chat and they refunded it after the seller didn't respond to them in a timely matter (big surprise). That experience has soured me a bit on going outside the "main channels". Had I purchased that from that seller directly through their website, I'd have either spent hours of time proving to them that I never got the product, have to just eat the money, or deal with the back-and-forth of proving to my CC company that it warrants a chargeback.