My time is worth money and spending endless hours on the phone with DJI to save possibly another 20% or $200 is simply not worth it to me. Let me put it this way, you could be enjoying this wasted time flying that drone you bought at a 10% discount rather than aggravating yourself along with rapidly aging while waiting for DJIs automated phone system to countdown from the 175 other dissatisfied customers ahead of you in cue.