So just an update, I provided a return label through Royal Mail 48 hr tracked. I message buyer to say I'd like everything back. His reply was " sure I'll post it now as its all packed away in box, you could have made this easy by giving me £70?"

Guess what, wasn't posted yesterday. This person is clearly trying to obtain more money from me. 

Label expires on the 8th, am I responsible for supplying more labels at my own cost until 27th May? He is clearly violating and abusing the ebay policy