Agreed. Messaged a seller on Sideline Swap who was selling HP70X's and asked if his had the X designation or not, and he said they did.
Eh, as long as it's 0 cost to me, I would rather return them and get what I actually wanted. There's nothing wrong with my HP45X and they are my pant I game right now, so it's not like I'm in dire need of pants for an upcoming game or something.