Various reports will allow you to track which of your marketing efforts are really working, and which ones aren’t.
For eBay, you will be able to compare how many auctions you are creating per month vs. how many of them result in a sale. Because eBay is a global marketplace, you may need to adjust your auction prices to be more competitive.
You can see how many page views you are getting overall and how many views you are getting on your eBay auctions, and find out which visitors are actually generating leads and sales. Compare the number of sales and amount of profit generated through eBay auctions vs. other channels.
This valuable information will help you to refine and focus your efforts on those areas which will generate the most sales and profits for your business.