Ebay sellers beware, when getting pre paid postage labels some do not cover the full cost!
The buyer is allowed to choose postage type and pay a price which doesn't cover the cost. In which case the excess on downloading label is taken automatically from the sellers account.
Only way to realise is the buyers name and address is shown when item is purchased. Usually only shown when label is printed.
Beware you are not caught out for excessive postage. I was to the price of several pounds more than I could of posted via different courier.