Just comparing the price of a unlocked nexus and found this. Look for it yourself for proof.
Removed the image. To much personal info on it. Go to one of the dozen other websites to view it.
Please don't get mad at the CSRs the only information that have is from Google. It seems Google is not supplying them information also. They are normal people coming to work everyday to pay their way through school and feed their children. I know ...
To give an example of how "closely" an AT&T store rep examines a phone for exchange/return:
I noticed a couple days ago that the volume button on my own M8 is quite a bit more.. wiggly.... than the AT&T demo M8's in my local store. It doesn't ...
And it it cost what .30 cents to place an NFC chip on a credit card. Its not going to raise the price of the battery at all.
(yes I know they are different chips but point still stands but it is not an Expensive technology.