If I were to purchase an iPhone foldable display, (let’s say fall 2019 of Apple would theoretically released their version), the most I would be willing to spend right now would be approximately $2500, that’s assuming this technology would meet my expectations and Apple emphasized some unique characteristics about it that the other competitors did not include or refine to make the experience personable.
[I’m extremely particular about my ‘tech products’, and I just don’t buy something just for the sake of having it, I want the product to be able to deliver an experience that the other competitors failed to do, that’s why I usually like/support Apple products.]