I am confused - are you happy to refund my purchase price in GBP and let me keep the incorrect item? The item doesn't appear to work, so I am not certain I'd be able to sell it but I could try.
If you want to do this then that is fine by me - I can get the item back from the courier and if you refund my original payment then I'd be happy to delete my feedback on ebay.
One thing I will need: the refund would need to be refunded as a paypal GIFT as I do not want to be paying commission to paypal. Also, The total amount of the refund would need to be GBP £339.05 (which was the conversion from USD $515).
Please confirm my understanding is correct - if you are happy to do this then that will be the quickest way to resolving the negative feedback.