This is actually somewhat true again now that Amazon has gone full monopoly abuse, but for a while Ebay was nothing but 1:1 with Amazon sellers and a serious lack of auctions.
Although you can go much lower with Ali Express and Temu, albeit with risk invovled.
Just as casual conversation, what items or categories of goods do you usually deal with? Just wondering, as I myself have noticed "the boat" rocking back and forth between different online buying options for years. I live a pretty minimalist life now (used to be heavy tech) so I don't buy much anymore and am pretty out of the loop now.
I thought eBay in this context meant second hand? Because here's the thing: i think second hand means you save a lot of money but you get less choice and less convenience; but platforms are getting good now so both of these factors are mitigated.
Anyway, eBay being 1:1 with Amazon is good enough for me, and i agree that AliExpress in particular is now better than Amazon in terms of price and choice. I don't even know how risky it really is, they can refun orders right?