This is not really a valid option, people don't want to inconvenience themselves for no reason.
If there was a vendor added that sold bis mythic gear and all mounts and pets for a copper each, that would probably not be very good for the game because people would do it and then quit out of not having anything to aim for.
The appropriate response to that isn't "well just don't use the vendor," it is "stop designing the game in a really stupid way."