Why it is so expensive to unlock T-mobile iPhone 5s?
I am trying to figure out why is it so expensive to unlock T-mobile iPhone 5s (unlocking fee $130+) as compared to other careers? I have bought the phone off of craigslist at almost full price without realizing that it is going to be so expensive to get it unlocked. I also don't know whether the person who sold me the phone paid the full price to T-mobile (probably not). I have got iPhone unlocked in the past and they costed my only $20. I want to use this phone on AT&T and then possibly internationally.
I would really appreciate it if someone can help guide me with my options.
Should I wait longer so the unlocking fee to goes down? will it even go down say in few months?