To make use of this method of valuing your items you will need to have access to an Ebay account.
1) Firstly log in to your eBay account
2) Secondly, enter the description of the item you are trying to ascertain the value of into the search bar at the top of the page.
When you are happy that your ‘search results’ are showing the item that you wish to value…
3) Thirdly, Select the advanced tab to the right of the search and tick sold & completed listings.
The Result
This will generate a list of recently sold or completed items relevant to your search criteria.
Then simply, take the prices from as many as you can see and divide the combined selling value by the amount of items that you selected.
This will give you an average price that the items you are valuing are selling for.
In My Opinion that will give you the true value of your item.