Trade in of iPhone 6 to iPhone 6 Plus at Best Buy

[iMore Question]

I am on Day 9 of 14 with my iPhone 6 (128 GB). If I decided to trade it in for an iPhone 6 Plus (128 GB) would I still have to pa7y $100 more or could I get a discount if I went through the Apple store?

 

[kch50428]

You can only return the 6 for an exchange at the place you got it...