Re-save your postage defaults.First off, make sure your settings are in the same currency as you are trying to set the postage in. If your settings display prices in dollars, your postage will be in dollar amounts.Open a new tab and go to your accounts page http://silkroadvb5piz3r.onion/index.php/accountClick on add listing.Enter a name and a price for each postage option you offer.Click on set as default.When the page reloads, close the tab.Now try adding an item and loading the default postage options.