Most answers to this question will revolve around storage space and your time preference. I have some items that list for $2,000 on Ebay. I'm yet to sell one at the $400 I'm asking for it but I will continue to list it until it sells. There are efficient ways to list your items using software like Garage Sale. I simply wait for ebay to offer free listing days and list the item all at once with a couple clicks of the a button.