Hi,selling some items that are not high value but weigh under 2 kilos so selected small parcel option.Problem is I have now sold two items to the same buyer which has taken the weight over 2 kilos.EBAY have lumped the two sales together under the same postage cost. As I see it I now have to purchase separate postage label for the second parcel at my own cost

If these were sold under the 'simpleton delivery' then the mistake is eBay's and you can put both together in one with one label.