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

I never add additional folds and if I quote a parcel price it's because they exceed letter size.

I will only post internationally using GSP, if you are buying multiple items please wait to pay until they provide you with a combined invoice as they will not be able to combine postage retrospectively.

If a UK buyer, I will always try and combine postage, please await an invoice from me.

Thanks.