Yeah, um, I have a base+rover pair, with the base set up in my kitchen window and the rover on my quadcopter, for around $600 total... no internet required, no

Yeah, um, I have a base+rover pair, with the base set up in my kitchen window and the rover on my quadcopter, for around $600 total... no internet required, no corrections source, all the math done inside the F9P itself by default, or offboard with rtklib if I'm feeling masochistic... It's gotten incredibly affordable.