I post all paper items protected and in proper card backed envelopes.

I never add additional folds, if the item is shown with a parcel postage price that is because it is oversized and will not fit in a small or large letter envelope.

I'm always happy to combine postage when I can.

I only ever use GSP for international shipping, if you are buying more than one item please wait until they provide you with a final invoice as they cannot combine shipping retropectively.

Thanks for looking.