Ebay - bizarre coincidence

Tonight I will be packaging up some stuff I have sold on Ebay. While printing off the packing slips I thought that 2 things were bought by the same person, so I was preparing to try and work out a discount for postage and packaging. However, on looking more closely I realised that the 2 items were actually bought by 2 different people, in different parts of the UK, with exactly the same name! What are the odds on that?!