I have had a PinePhone in the first edition for ~ a year. There is a lot of exiting development from projects like postmarketOS, Mobian and many others. This is laying the ground floor for a hopefully sustainable future for Linux Phones. The PinePhone will never be my daily driver, it's hardware is just too mediocre. Pine64 has still to announce a successor with better specs, no idea if that will ever happen.
I also ordered a Librem 5 in Oct. 2017 and still waiting for delivery, hopefully in October this year. When talking about the price of the L5, you have to factor in, that they not only developed an operating system, but also the mainboard and the whole layout from zero. That is a major undertaking and I give them credit for it.