GET YOUR MONEY BACK FROM APPLE FOR FAULTY IPHONE 6 + £249.
Right here goes I got an email from Apple regarding my IPhone 6 + that had a hardware issue away back last summer, there seems to to be a common problem with them that the hardware crashes about a year and half down the line, they are unfixable so Apple charges you £249 to get a new phone instead of getting a repair done, they have now come out with this refund policy for all iPhone 6 + that had the hardware issue. I have just came out the store after showing them my email and got my £249 back. Result.
It seems OP means he got charged £249 for a repair but instead Apple decided it was easier too give him a free phone (for that £249) - now Apple think the repair should have been £100-odd but they're just refunding the whole £249 - obviously half the people won't claim or even know about this. Then he sold the new phone.