Be aware that ebay is a "moving target" so to speak.

They change their rules and regulations constantly and the changes may not be to your liking or profitability.

One of the hardest parts is adapting to this.

 At some point you will feel set up, prepared, have stock and your target market in sight.

Then along comes ebay with a great big spanner to throw in the works........

Whether this is allowing greater exposure to OS sellers or merging categories, something is always changing.