Hi there,  I am trying to understand why there seems to be a difference in shipping pricing lately on Trademe when I list a product vs when the product is sold and I go to book a courier for this same listing. Recently I specified the postage costs in a listing by providing all the dimensions and weight and it automated the postage costs for buyers to select when bidding/winning the auction.  The customer selected their appropriate delivery choice and it was $11.60. Now when I go to book the same listing for a courier pickup, the cheapest delivery option is $18. This is no small differenc...