It is $800 but the hardware is nowhere near equal, since Fairphone are usibg newer standards (for midrange 2026 smartphones).

You'd also have issues running backwards compatible applications. You won't have such issue on /e/, SFOS, or GrapheneOS. Of these, /e/ works on Fairphone. SFOS recently got released for latest Jolla smartphone, and GrapheneOS continues being a good option for Google Pixel and perhaps Motorola in near future.