Most ppl do the EIP so buying it a state (when the phone is BRAND NEW no less) that won't charge you tax is rarely an option....
Personally, if i purchased phones solely based on resale value i'd still be rockin' a Motorola Razr flip phone...lol
I just calculate the approx loss, split that up into the weeks (yes i said WEEKS...lol) i own it and just rationalize, ,"well it cost me approx 25 to 30 a week to rent this GREAT 'state of the art' piece of tech", then i sell it and its ON TO THE NEXT : )
BTC