Just list the item abit above what you are willing to sell for.
Then lower the price until someone buys it.
http://en.wikipedia.org/wiki/Dutch_auctionThis way you get some of the favourable traits of an auction versus "retail".
It will allow for pricediscovery, and capture a "premium" if there is one to be had.
And you do not fall in the trap of getting a price that is lower than your actual sellingprice.
Just make sure many potential buyers are aware that the item is up for sale, and resonable time for people to notice it.
If you flatout just list the items at the lowest price you are willing to sell for you just get pms from people that want it cheaper.