I post all paper items protected and in proper card backed envelopes.
I never add additional folds, if I quote a parcel price it is because I can't fit the item flat in a small or large lette
I
will always try and combine postage where I'm able to. If you are in
the UK, please request an invoice if buying more than one item, and I
will adjust the postage.
I only use GSP for
International Shipping. If you are non-UK and buying more than one item,
please wait for them to send you a combined postage price before you
pay, as they are unable to make adjustments retrospectively.