iCeOL8TRAmnesiaI do understand how warranties work and Sennheiser requires proof of purchase from an authorized seller. They do not provide warranties for individual sales on e-bay and are explicit about this.
You could buy a hd6xx from a scalper on ebay with no warranty or buy a new 650 for essentially the same price with a full warranty.
JacobHI know its not legal but they cant track every order. Its not hard to make fake receipt. This is the loophole I was referring to. They often dont put in the effort to check every receipt is good by calling the store and have them pull it up. They can but I dont think they put in the effort to do this. I'm not telling anyone to do this. I'm merely pointing out the reality.
It already has a bid on it for $299... and even shipping isn't free.