HELLO I AM NEW TO EBAY JUST 18 YEAR OLD SO NOT A PROFESSIONAL GUY PLEASE CAN ANYONE HELP ME CAN I INCREASE THE CHARGES AFTER AUCTION ENDS OR IT IS AGAINST EBAY POLICY OR WILL BUYER LEAVE ME A NEGATIVE FEEDBACK AND ONE MORE THING ONE BUYER IS CONSTANTLY BLACKMAILING THAT IF HE WINS NO MATTER WHAT HE WILL LEAVE ME A NEGATIVE FEEDBACK
THANKS IN ADVANCE