How to send used panties?

[EffyMFCx]

I sell my panties for Amazon vouchers.
£30 for panties
£30 for bras
£3 for 3 Polaroids of me playing/wearing them or whatever the customer wants.
£1.50 per additional shot. So if they wanted 5 pictures it would be £6
Also if the customer just wants them worn, I wear them for one day for free but if they want them worn for longer I charge £10 per day extra

I now realise that was irrelevant to what you were asking haha!
I'm in the UK but I put my panties in a airtight sandwich baggy. I squeeze all of the air out too to try and keep them in as "fresh" a condition as possible. I've heard that putting them in the freezer overnight also helps keep them if you cannot post them right away. You will always need to pay postage unless you get a prepaid envelope, I put a wee mark on the back so they know it's from me and don't accidently open them in front of folk!