Hi I bought 2 items from one seller, asked for invoice, the seller sent a combined invoice but did not reduce the postage - the invoice says "Australia Post Regular parcel + tracking $13.95";   fair enough I think, she must be sending in a 3 kg satchel.

So I pay and receive the items which have been sent in an ordinary envelope for $3 as a large letter (no tracking).

Any advice, please?