User Activity

I just want to reduce the price on an item but when I press revise I get taken to a page that wants me to redo the whole listing. Five attempts all took me to a new "supposedly easy" listing page.
Sold a $10.00 item but as the buyer lives within 50 km the postage is less than quoted. She had paid immediately via paypal. I've refunded her $3.65 also via paypal which is my policy as I only charge the exact postage. How do I alter the final amoun...