I am looking at a gently used dji phantom 4 pro 4k with bag and extra battery. he has owned it for about 1 1/2 years with very little usage and adult owned. I want to do still shot photos to manipulate with photo shop. it appears this drone has one of the best cameras. He is asking 850 or best offer. what is a good price ? also are there any newer models that is better for what i am trying to accomplish ? goal is to print photos on metal. Thanks for your assistance.