5 Sure-Fire Ways to Make More Money on EBay by John Lenaghan
... Shipping & Handling You should always charge actual shipping costs, or at most a little extra to cover the cost of your shipping materials. There are a number of shipping calculators that can be added to your description so people can calculate their own shipping. Another option is to state that you will provide actual shipping at the end of the auction, based on the destination. Overcharging your customers for shipping and handling is frowned upon and will often result in unhappy customers.