A second hand pixel is a quarter of that. A four year old second hand phone being worth as much as a new midrange phone still makes these devices a bad deal, especially with the Z Fold 4 receiving no more security updates within a year.
It was an awesome deal because I love having a folding phone. If you don't then it won't be.
And it wasn't 4 years old when I bought it. It was a year old. My point is you can buy second hand of the previous model or so, a lot of people have FOMO and upgrade often even though newer Folds have only minor differences.