if you do a lot of ebaying/shipping, best bet is get an account with a courier. I\'ve got an account with business post, Even though I don\'t send as much out as I used to, once a month if that these days. They have a service where they have some big bags, almost bin liner sized, whatever you can cram in, next day delivery, just under a fiver, and they collect from you, the smaller size bag (roughly 12\" x 10\") next day just over 3 quid. Gave up on going to the PO, too expensive and unreliable