Ayashe, you have done well. Repousse is the correct term for embossing/stamping/beating the decoration into the pewter (or metal) and is also called "joggling". Joggling was done by tapping a chisel and rocking it side to side to make the design - which the Dutch specialized in this type of work.
However, you will note that the Dutch, German, English, etc did put makers marks on their items....which is why I have requested and am requesting pictures of the back of the plates. You can't determine if it is a higher priced item unless you get all the facts! Several of those listed do have the angel mark.