The goggles alone are worth quite a bit.....I would ask for 800 with them ...I was tempted to low ball you myself, bt I don't know how to FPV...good luck with it
To my very limited experience, the FPV is much better flying with the phone or tablet. Basically, you still control with the controller, but you get the FPV (like what the bird sees). When you look around, it will command the camera on the gimbal to move following your head motion. What I did is I fly to a certain point, let the Mavic hover there, and look around from that point. I know it's a very ABC way to use it. But I liked it at the time.
Thanks again for all the help. I am going to list it for $700, PayPal fee and shipping included.
Good question! I got into Astrophotography about 3 or 4 years ago. This AP hobby is super addictive. Take a look at my works here: Min Xie's gallery - AstroBin.
You're photos are really good. I'm a big fan of Astrobackyard on YouTube, and your photos rival his. It's clear you put a great deal,of care into your imaging.