This turned out to be an interesting microcosm of drone owners and they're take on things. You have the majority at 60% which is fair, a few at 50%(me) who think their phantom is good, but dji service isn't, so youd feel bad selling a guy something you knew he was gonna be on his own, warranty or not, then you have the 70% guys, they fall somewhere close to the 60's, they just think its worth it, and then the 80%. I don't really understand these. Anything, except real estate, that you buy has depreciation. It may be worth a little more if you kept it in an airtight container, only flew it to church on sundays and never went over 25 mph, but 80% is a little high IMO.