To be on the safe side you should really cancel the sale and relist with "Collection only" Or "hand delivery only" for your buyer to buy again. This way your buyer will receive a collection code which they will show you on pickup.
Without this code you will not get your funds through from ebay for about 3 weeks, and if you don't have the code you have no proof of delivery meaning your buyer could claim not received, if they prove to be dishonest.
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