For me it is the opposite, and I have been using eBay since the early days.
I can get from Amazon stuff that is new, that I can return with minimal fuss, at my doorstep, often next day.
Whatever savings I might get using the same item used on eBay do not compensate the time and mental strain of dealing with shipping delays, potential scammers, articles with defects "unmentioned" in the original description, non-existent warranty.
Nowadays I use it only for very specific items that cannot be found on Amazon, or just to sell spare stuff (in the very rare occasions where it's worth it).
I can get from Amazon stuff that is new, that I can return with minimal fuss, at my doorstep, often next day.
Whatever savings I might get using the same item used on eBay do not compensate the time and mental strain of dealing with shipping delays, potential scammers, articles with defects "unmentioned" in the original description, non-existent warranty.
Nowadays I use it only for very specific items that cannot be found on Amazon, or just to sell spare stuff (in the very rare occasions where it's worth it).