Excuse me , could you tell me which line I ’ m supposed to stand in to buy bubble wrap and to post a package ?   You can buy the bubble wrap here , but you ’ ll have to stand in line over here to post your package .   That ’ s a really long line . How long do you think it ’ ll take to get through all those people ?   It takes about 3 minutes per person , so it ’ ll probably be about an hour ’ s wait .   Can I buy stamps here ?   Sure . How many would you like ?   I need 30 for my Christmas cards .   Are you sending them abroad ?   Twenty of them are going abroad to China and America .   Do you have any going anywhere in the EU ? If you do , those are less expensive .   No .   Ok , here you go . That will be 18 pounds and seventy two pence .   And the bubble wrap ? 