With Amazon, if you get scammed by a seller, call Amazon.
I had ordered something from a reseller because the price seemed to be too good to be true (it was claimed a clearance closeout). Sure enough, it was too good to be true. I called Amazon about it, they tried to contact the reseller about the product, but got no reply. I ended up getting refunded the amount, and replaced my credit card just in case.
I also had another case where I never received a product I ordered. Called Amazon, they contacted the seller. Amazon contacted me back and asked if I'd like the item reshipped completely for free or to cancel the order. I asked to have it reshipped and it was overnighted for free.
Amazon, like most retail businesses, will try to do what it can to keep it's customers.