The storeI went to was good. It was in Pasadena, CA. I went in to compare the M50 and the SRH840 and the guy opened up some brand new boxes off their shelf as they did not have any demo models. He then let me take them out and play around with them to my heart's desire and even offered to hook it up to some music - to which I declined as I didn't wish to listen to headphones that weren't burnt in.
When I finally decided on the SRH840s, even before I could ask, he went online on his computer and started googling the lowest prices to price match. I already had done my research and knew what they were being sold for on Amazon so he found a website with comparable prices and said, "Would you take it today for this price?"
After we agreed, his manager had to authorize it, but the manager tried charging sales tax on top of that price. I told him ( the manager), "No way, I'm not buying it unless I got the initial price as the FINAL price." The manager then tried to protest with something about tax and shipping, but I already knew that most websites outside of California charged neither, and that I'd have no problem going home and buying from Amazon. He finally relented and I got my price match. To his credit, the manager wasn't too pushy or anything. He was just probably trying to get away with the higher price, but was probably more eager to sell something rather than nothing that day.
But yeah, OP, people are just people. I probably lucked out in meeting both a nice salesperson and a manager, and they were probably having a really slow day that time and wanted to just sell something. Maybe if you spoke to different salespeople, you might have a different experience or at least have concrete names you can cite in your complaint to their corporate office.
As far as return policy, from what I read on the back of the receipt, you should be able to return headphones. Just not earphones, IEMs or microphones. It might be different in your state, so definitely read up on it.