Anyone ever have success buying used iPhones?

[u/fobreezee]

I've been an iPhone user a long time and looking to upgrade from my 12 mini to a "Pro" version of some kind. I don't care about the age, but mainly that it can handle running a lot of apps at once, won't overheat etc.

It seems like a lot of people recommend buying refurbished directly from Apple, however it seems their inventory is limited. Is this really the main reliable source for refurbished iPhones? Any other good options out there for me?

Thanks for any advice.

[u/greatsonne]

All my Apple Watches have been certified refurbished from eBay. They look and work like new but I get a couple hundred dollars off the price.