One thing I have never figured out is why ebay is cheaper than Amazon but most stuff ordered, from Ebay (in the United States) comes in Amazon boxes. I have always found this to be a bit odd. I also have noted that people all seem to prefer Amazon over Ebay.
I did learn, several years ago, that one should NEVER get anything for 'free' from Amazon as you will be subscribing (with absolutely no head's up) to something that will dun you forever.
This is like getting a "free" tablet from your cell phone company.