It’s cost you $12.44 to sell that item. Plus, time to pack and post, adding cost of fuel if you have a bit of a drive to the post office.

Is this cost, worth it for you? 

I don’t sell on eBay and haven’t done for over 10yrs.  (I sell on other platforms) 

I’ve always thought the fees were too high, while others think it’s reasonable. 
Each to their own, and what ever works best for you, is what you need to think about.