I have a 128 gb iPhone 6s Plus that I bought last year from the Apple Store. I went to the T-mobile store today and they told me if I trade in my phone and pay $99, I could get the 6s Plus 64GB. Then I have to pay $5 every month and $8 insurance every month on the top of my bill. Do you think it is worth at all? I bought the 128GB last year for about $900++.