I mailed the second item I sold on eBay. After deducting the various fees, I net $7.42, which I will add to the Challenge.

Old Total: $531.36
+ eBay sale $7.42
------------------------
New Total: $ 538.78

After reviewing my eBay invoice to calculate my exact profit, I was confused as to why the insertion fees for the sold items were credited back to my account.

A little further investigation led me to the explanation that if you list an item on eBay and it doesn't sell, you are eligible for a credit of the insertion fee if you re-list the item within 90 days AND the item sells the second time around. Since both of the items I sold were re-lists, eBay credited the insertion fee back to my account. This policy holds true even if you re-list at a lower price the second time (as I did).

If the item(s) do not sell on the re-list, you are out of luck and pay the insertion fee(s) again.

You can read this policy in full detail here.