@Notagainshould In the past I've purchased 'Like New' from Amazon and was satisfied with what I received. Also their returns are probably easier than the hoops you're jumping through with O2. Just something for you to think about should you change your mind about buying a slightly older phone again.
Scratches and chips of any kind on an item marked as "Like new" is completley unacceptible in my opinion.
I purchased a Micosoft Lumia 640 4G refurbished phone graded as A1 for 23.99 from an ebay seller about a year ago for my O2 PAYG SIM and it was (and still is) immaculate, and yes I am a complete cheapskate.
Track usage, upgrade and get support with the My O2 appDownload My O2