I am trying to buy 2 items from a seller they offered to combine postage in their descriptions I messages them and they updated the bill. It's now 92p more expensive not 50p cheaper as advertised (I do feel a bit stupid quibbling over £1.42)
They told me to select the second class option and I have no idea how to.
I normally use the iPhone app but have tried to use the website and can't figure it out. Please explain what really obvious thing I am missing