I was adding items to sell and when I got to the postage section, I put in the postage amount I was to charge and USPS First Class. The next time I added a similar item I see below the Postage block ad section for added cost for additional items. I can't get that back for each new time I add items. I suspect that if I had three of an item and someone wanted to buy more than one , then this would apply so as to not charge them full rate for three of the same item. SO>>>>>how can I do that for ALL my items? if a buyer wishes to buy 5 different stamps from me that I have listed, why must I charge full shipping on each and every item? Is there some way to adjust it?