I have used about 10 - 15 pieces of paper from this 100 pack. They were used in a dark room and I haven't been opened outside of the dark room.
These packs are £33 plus delivery online so I'm hoping for £25 plus delivery as only 10 - 15 % has been used.
Paypal or BT
1st class recorded £6.70 or standard parcels £4.50 depending on user.