How can I value my items before putting them on eBay?

I have some unusual items that I would like to sell but I have no idea if it is worth putting them on ebay. It would be useful to know how much similar items have sold for in the past, so I can price them appropriately: is there a way of accessing this information?
Tony Rickard, by email

Ebay archives details of all sales and auctions held within the past 15 days. In some categories, such as Collectibles this is extended to 90 days for items that have sold, and 45 days for those that haven’t. To search for listings that have ended click the Advanced link next to the search button at the top of the page. Enter a description or keywords of the items you are looking for and in the ‘Search Including’ section check the Completed listings box. Any other information or options you can enter on this page will help to narrow your search. When you have finished click the Search button at the bottom of the page.

The Telegraph

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