Which is better: selling on amazon or selling on ebay?

I have an individual seller account and I've noticed that my products sell much faster or ebay. However, I sold two iphones. My final sale fee $1100.
However, ebay charged me a final sale fee of $135
Then I was charged $40 by paypal
Then I paid $60 total to ship both items.

On my amazon account I sold 1 phone. The phone cost $180
Amazon took out $30
Shipping cost $10
So I made $140

Amazon

EBay. Amazon charges ridiculous fees. The only downside to eBay is they always take the customer's side and there are a lot of scammers out there.

Ebay.

Obviously ebay. Amazon is more expensive priced.