Ok before people get their pitchforks out hear me out.
So as someone who does trials, or just occasionally goes to their home to get ulti/rp etc we get the teleport cd debuff, yes porting insides the house is free but outside expensive.
Yes you can port to a guildmate/friend or to a group member etc but imagine this, trial is reset you go to get ulti what do you do? wait for someone to port in then port on them?
I would definitely buy it, but I wouldn't pay more than 5k ideally less but knowing zos 5k is where they will price it at. I assume most endgamers will do as well as roleplayers.